Liste der Isotope/Ordnungszahl 81 bis Ordnungszahl 90

Liste der Isotope ist die Übersichtsseite, um komfortabel auf alle Elemente zugreifen zu können. Dort wird auch der Aufbau erklärt und die Legende zur Tabelle ist auch dort zu finden. Zerfallsenergien wurden mit den angegebenen Massen und dem Masse-Energie-Äquivalent von ${\displaystyle \textstyle \Delta m=931{,}4940954{\frac {\mathrm {MeV} }{\mathrm {u} }}}$ neu berechnet.

₈₁ Thallium

Iso­top	Halbwerts­zeit	Zerfallsenergie (MeV)	Spin / Parität	Zerfallsart(en) (%)	NH (%)	Masse (u)
^179Tl	0,16 s	6,86		α ≈ 100
^179m1Tl	1,4 ms	6,86	(9/2−)	α ≈ 100
^180Tl	0,70 s	6,82 (α), 11,1 (εβ^+)		α = ?, εβ^+ = ?, εSF ≈ 1,0·10^−4
^181Tl	3,2 s	8,5	(1/2+)	εβ^+ > 0
^181m1Tl	1,40 ms		(9/2−)	IT = 99,60, α = 0,40
^182Tl	3,1 s	10,1 (εβ^+), 6,55 (α)	(7+)	εβ^+ > 96, α < 4
^183Tl	6,9 s	7,6	(1/2+)	εβ^+ > 0
^183m1Tl	53,3 ms	0,550 (IT), 6,85 (α)	(9/2−)	IT > 99,990, α < 0,010
^183m2Tl	1,48 µs		(13/2+)	IT
^184Tl	11 s	9,2 (εβ^+), 6,30 (α)	2+	εβ^+ = 97,9, α = 2,1
^185Tl	19,5 s	6,6	(1/2+)	εβ^+ = ?
^185m1Tl	1,83 s	0,454 (IT), 6,554 (α)	(9/2−)	IT = ?, α = ?
^186Tl	27,5 s	8,5 (εβ^+), 5,89 (α)	(7+)	εβ^+ ≈ 100, α ≈ 0,006
^186m1Tl	2,9 s	0,374	(10−)	IT
^187Tl	51 s	5,9 (εβ^+), 5,539 (α)	(1/2+)	εβ^+ = ?, α = ?
^187m1Tl	15,60 s	0,335 (IT), 6,235 (εβ^+), 5,874 (α)	(9/2−)	IT = ?, εβ^+ = ?, α = ?
^188Tl	71 s	7,8	(2−)	εβ^+
^188m1Tl	71 s	7,8	(7+)	εβ^+
^188m2Tl	41 ms		(9−)	IT
^189Tl	2,3 min	5,18	(1/2+)	εβ^+
^189m1Tl	1,4 min	5,461 (εβ^+), 0,281 (IT)	(9/2−)	εβ^+ ≈ 100, IT < 4
^190Tl	2,6 min	7,0	(2)−	εβ^+
^190m1Tl	3,7 min	7,0	(7+)	εβ^+
^191Tl		4,49	(1/2+)	εβ^+ = ?
^191m1Tl	5,22 min	4,789	9/2(−)	εβ^+
^192Tl	9,6 min	6,12	(2−)	εβ^+
^192m1Tl	10,8 min	6,12	(7+)	εβ^+
^193Tl	21,6 min	3,64	1/2+	εβ^+
^193m1Tl	2,11 min	0,365 (IT), 4,005 (εβ^+)	9/2−	IT = 75, εβ^+ = 25
^194Tl	33,0 min	5,28 (εβ^+), 3,49 (α)	2−	εβ^+ ≈ 100, α < 1·10^−7
^194m1Tl	32,8 min	5,28	(7+)	εβ^+
^195Tl	1,16 h	2,81	1/2+	εβ^+
^195m1Tl	3,6 s	0,483	9/2−	IT
^196Tl	1,84 h	4,38	2−	εβ^+
^196m1Tl	1,41 h	4,774 (εβ^+) 0,394 (IT)	(7+)	εβ^+ = 95,5, IT = 4,5
^197Tl	2,84 h	2,18	1/2+	εβ^+
^197m1Tl	0,54 s	0,608	9/2−	IT
^198Tl	5,3 h	3,46	2−	εβ^+
^198m1Tl	1,87 h	4,004 (εβ^+), 0,544 (IT)	7+	εβ^+ = 54, IT = 46
^198m2Tl	32,1 ms	0,742	(10−)	IT
^199Tl	7,42 h	1,44	1/2+	εβ^+
^199m1Tl	28,4 ms	0,75	9/2−	IT
^200Tl	26,1 h	2,456	2−	εβ^+
^200m1Tl	34,3 ms	0,754	7+	IT
^201Tl	72,912 h	0,483	1/2+	ε
^201m1Tl	2,035 ms	0,92	(9/2−)	IT
^202Tl	12,23 d	1,365	2−	εβ^+
^202m1Tl	572 µs		7+
^203Tl	stabil ^α		1/2+		029,524
^204Tl	3,78 a	0,764 (β^−), 0,347 (ε)	2−	β^− = 97,10, ε = 2,90
^205Tl	stabil ^α		1/2+		070,476
^206Tl	4,199 min	1,533	0−	β^−
^206m1Tl	3,74 min	2,643	(12−)	IT
^207Tl	4,77 min	1,423	1/2+	β^−
^207m1Tl	1,33 s	1,348	11/2−	IT = 100, β^− < 0,1
^208Tl	3,053 min	5,001	5(+)	β^−
^209Tl	2,20 min	3,98	(1/2+)	β^−
^210Tl	1,30 min	5,484 (β^−), 0,299 (β^−n)	(5+)	β^− ≈ 100, β^−n = 0,007${\displaystyle \left.^{+7}_{-4}\right.}$

₈₂ Blei

Iso­top	Halbwerts­zeit	Zerfallsenergie (MeV)	Spin / Parität	Zerfallsart(en) (%)	NH (%)	Masse (u)
^181Pb	45 ms	7,379 (α), 9,3 (εβ^+)	(13/2+)	α ≈ 98, εβ^+ ≈ 2		180,99665
^182Pb	55 ms	7,076	0+	α <= 100		181,992673
^183Pb	300 ms	7,03 (α), 8,7 (εβ^+)	(1/2−)	α ≈ 94, εβ^+ ≈ 6		182,99187
^184Pb	0,55 s	6,775 (α), 6,0 (εβ^+)	0+	α = ?, εβ^+ = ?		183,988136
^185Pb	4,1 s	6,68		α < 100		184,987610
^186Pb	4,83 s	6,471 (α)	0+	α = 54, εβ^+ = 46		185,984238
^187Pb	18,3 s	7,2 (εβ^+), 6,395 (α)	(13/2+)	εβ^+ = 98,0, α = 2,0		186,983911
^187m1Pb	15,2 s	7,2 (εβ^+), 6,395 (α)		εβ^+ = ?, α = ?		186,983911
^188Pb	24 s	4,8 (εβ^+), 6,111 (α)	0+	εβ^+ = 91,5, α = 8,5		187,980875
^189Pb	51 s	6,7 (εβ^+), 5,85 (α)		εβ^+ > 99, α ≈ 0,4		188,980844
^190Pb	1,2 min	4,1 (εβ^+), 5,698 (α)	0+	εβ^+ = 99,79, α = 0,21		189,978082
^191Pb	1,33 min	5,9 (εβ^+), 5,41 (α)	(3/2−)	εβ^+ = 99,987, α = 0,013		190,97828
^191m1Pb	2,18 min	6,038 (εβ^+), 5,548 (α)	(13/2+)	εβ^+ ≈ 100, α ≈ 0,02		190,97828
^192Pb	3,5 min	3,4 (εβ^+), 5,221 (α)	0+	εβ^+ = 99,9941, α = 0,0059		191,975785
^193Pb	2 min		(3/2−)	εβ^+ = ?		192,97617
^193m1Pb	5,8 min	5,2	(13/2+)	εβ^+		192,97617
^194Pb	12,0 min	2,7 (εβ^+), 4,738 (α)	0+	εβ^+ ≈ 100, α = 7,3·10^−6		193,974012
^195Pb	15 min	4,5	3/2−	εβ^+		194,974549
^195m1Pb	15,0 min	4,701	13/2+	εβ^+		194,974549
^196Pb	37 min	2,05 (εβ^+), 4,2 (α)	0+	εβ^+ ≈ 100, α < 3·10^−5		195,972787
^197Pb	8 min	3,58	3/2−	εβ^+		196,973435
^197m1Pb	43 min	3,889 (εβ^+), 0,319 (IT)	13/2+	εβ^+ = 81, IT = 19		196,973435
^198Pb	2,40 h	1,41	0+	εβ^+		197,972015
^199Pb	90 min	2,88	3/2−	εβ^+		198,972913
^199m1Pb	12,2 min	0,425 (IT), 3,305 (εβ^+)	13/2+	IT = 93, εβ^+ = 7		198,97291
^200Pb	21,5 h	0,811	0+	ε		199,971818
^201Pb	9,33 h	1,90	5/2−	εβ^+		200,97287
^201m1Pb	61 s	0,629 (IT), 2,529 (εβ^+)	13/2+	IT > 99, εβ^+ < 1		200,97287
^202Pb	5,25·10^4 a	0,05 (ε), 2,598 (α)	0+	ε = 100, α < 1		201,972152
^202m1Pb	3,53 h	2,17 (IT), 2,22 (εβ^+)	9−	IT = 90,5, εβ^+ = 9,5		201,972152
^203Pb	51,873 h	0,975	5/2−	ε		202,973391
^203m1Pb	6,3 s	0,825	13/2+	IT		202,973391
^203m2Pb	0,48 s	2,949	29/2−	IT		202,973391
203m3PB						202,973391
^204Pb	>1,4·10^17 a		0+		001,4	203,973044
^204m1Pb	67,2 min	2,186	9−	IT		203,973044
^205Pb	1,53·10^7 a	0,051	5/2−	ε		204,9744816
^205m1Pb	5,54 ms	1,014	13/2+	IT		204,9744816
^206Pb	stabil ^α		0+		024,1	205,974466
^207Pb	stabil ^α		1/2−		022,1	206,975897
^207m1Pb	0,805 s	1,633	13/2+	IT		206,975897
^208Pb	stabil ^α		0+		052,4	207,976653
^209Pb	3,253 h	0,644	9/2+	β^−		208,98040
^210Pb	22,3 a	0,064 (β^−), 3,792 (α)	0+	β^− ≈ 100, α = 1,9·10^−6		209,9841883
^211Pb	36,1 min	1,373	9/2+	β^−		210,9887354
^212Pb	10,64 h	0,574	0+	β^−		211,991896
^213Pb	10,2 min	2,070	(9/2+)	β^−		212,996561
^214Pb	26,8 min	1,024	0+	β^−		213,9998038
^215Pb	36 s		(5/2+)	β^−		215,00466

₈₃ Bismut

Iso­top	Halbwerts­zeit	Zerfallsenergie (MeV)	Spin / Parität	Zerfallsart(en) (%)	NH (%)	Masse (u)
^184mBi	13 ms		?	α ≈ 100
^185Bi	58 µs		1/2+	p ≈ 90, α ≈ 10
^186Bi	14,8 ms		(3+)	α ≈ 100
^186m1Bi	9,8 ms		(10−)	α ≈ 100
^187Bi	35 ms	7,69	(9/2−)	α > 50
^187m1Bi	370 µs	7,75	(1/2+)	α ≈ 100
^188Bi	265 ms	7,27	(10-)	α ≈ 100
^188m1Bi	60 ms		(3+)	α ≈ 100
^189Bi	674 ms	7,27 (α), 8,0 (εβ^+)	(9/2−)	α > 50, εβ^+ < 50
^189m1Bi	5 ms	7,362 (α), 8,092 (εβ^+)	(1/2+)	α > 50, εβ^+ < 50
^190Bi	6,3 s	6,862 (α), 9,6 (εβ^+)	(3+)	α = 90, εβ^+ = 10
^190m1Bi	6,2 s	6,862 (α), 9,6 (εβ^+)	(10−)	α = 70, εβ^+ = 30
^191Bi	12,4 s	6,781 (α), 7,3 (εβ^+)	(9/2−)	α = 51, εβ^+ = 49
^191m1Bi	125 ms	7,023 (α)	(1/2+)	α = 68, IT = 32
^192Bi	34,6 s	9,0 (εβ^+), 6,376 (α)	(3+)	εβ^+ = 88, α = 12
^192m1Bi	39,6 s	9,105 (εβ^+), 6,481 (α)	(10−)	εβ^+ = 90, α = 10
^193Bi	63,6 s	6,5 (εβ^+), 6,305 (α)	(9/2−)	εβ^+ = 96,5, α = 3,5
^193m1Bi	3,2 s	6,612 (α), 6,807 (εβ^+)	(1/2+)	α = 84, εβ^+ = 16
^194Bi	95 s	8,2 (εβ^+), 5,918 (α)	(3+)	εβ^+ = 99,54, α = 0,46
^194m1Bi	115 s	8,2 (εβ^+), 5,918 (α)	(10−)	εβ^+ = 99,80, α = 0,20
^194m2Bi	125 s	8,2 (εβ^+), 5,918 (α)	(6+,7+)	εβ^+ = 100
^195Bi	183 s	5,9 (εβ^+), 5,833 (α)	(9/2−)	εβ^+ = 99,97, α = 0,03
^195m1Bi	87 s	6,301 (εβ^+), 6,234 (α)	(1/2+)	εβ^+ = 67, α = 33
^196Bi	308 s	7,36 (εβ^+), 5,46 (α)	(3+)	εβ^+ ≈ 100, α = 0,001
^196m1Bi	0,6 s		(7+)	εβ^+, IT
^196m2Bi	240 s	7,629 (εβ^+), 0,269 (IT)	(10−)	εβ^+ = 74,2, IT = 25,8, α = 0,00038
^197Bi	9,33 min	5,2 (εβ^+), 5,39 (α)	(9/2−)	εβ^+ ≈ 100, α = 1·10^−4
^197m1Bi	5,04 min	5,89 (α), 5,7 (εβ^+), 0,50 (IT)	(1/2+)	α = 55, εβ^+ = 45, IT < 0,3
^198Bi	10,3 min	6,56	(2+, 3+)	εβ^+
^198m1Bi	11,6 min	6,56	(7+)	εβ^+
^198m2Bi	7,7 s	0,249	(10−)	IT
^199Bi	27 min	4,34	9/2−	εβ^+
^199m1Bi	24,70 min	5,02 (εβ^+), 5,64 (α)	(1/2+)	εβ^+ ≈ 99, α ≈ 1
^200Bi	36,4 min	5,89	7+	εβ^+
^200m1Bi	31 min	5,89 (εβ^+), 0,0 (IT)	(2+)	εβ^+ > 90, IT < 10
^200m2Bi	0,40 s	0,428	(10−)	IT
^201Bi	108 min	3,84 (εβ^+), 4,5 (α)	9/2−	εβ^+ ≈ 100, α < 1·10^−4
^201m1Bi	59,1 min	4,686 (ε), 5,346 (IT), 5,346 (α)	1/2+	ε > 93, IT < 6,8, α ≈ 0,3
^202Bi	1,72 h	5,15 (εβ^+), 4,29 (α)	5+	εβ^+ ≈ 100, α < 1·10^−5
^203Bi	11,76 h	3,253 (εβ^+), 4,15 (α)	9/2−	εβ^+ ≈ 100, α ≈ 1·10^−5
^203m1Bi	303 ms	1,098	1/2+	IT
^204Bi	11,22 h	4,438	6+	εβ^+
^204m1Bi	13,0 ms	0,805	10−	IT
^204m2Bi	1,07 ms	2,833	(17+)	IT
^205Bi	15,31 d	2,708	9/2−	εβ^+
^206Bi	6,243 d	3,758	6(+)	εβ^+
^207Bi	31,55 a	2,399	9/2−	εβ^+
^208Bi	3.68e^5 a	2,880	(5)+	εβ^+
^208m1Bi	2,58 ms	1,571	(10)−	IT
^209Bi	1.9e^19 a	3,137	9/2−	α	100
^210Bi	5,013 d	1,163 (β^−), 5,037 (α)	1−	β^− ≈ 100
^210m1Bi	3.04e^6 a	5,308	9−	α
^211Bi	2,14 min	6,751 (α), 0,579 (β^−)	9/2−	α = 99,724, β^− = 0,276
^212Bi	60,55 min	2,254 (β^−), 6,207 (α), 11,208 (β^−+α)	1(−)	β^− = 64,06, α = 35,94
^212m1Bi	25,0 min	6,457 (α), 2,504 (β^−)	(9−)	α = 67, β^− = 33, β^−α = 30
^212m2Bi	7,0 min	4,164		β^− ≈ 100
^213Bi	45,59 min	1,464 (β^−), 5,982 (α)	9/2−	β^− = 97,91, α = 2,09
^214Bi	19,9 min	3,272 (β^−), 5,617 (α)	1−	β^− = 99,979, α = 0,021
^215Bi	7,6 min	2,25		β^−
^216Bi	3,6 min	4,0	(1−)	β^− ≈ 100
^217Bi	97 s		(9/2−)	β^−

₈₄ Polonium

Iso­top	Halbwerts­zeit	Zerfallsenergie (MeV)	Spin / Parität	Zerfallsart(en) (%)	Masse (u)
^190Po	2,0 ms	7,643 (α)	0+	α = 99,9, εβ^+ = 0,1
^191Po	15,5 ms	7,471		α = ?
^192Po	0,0332 s	7,32 (α), 5,7 (εβ^+)	0+	α ≈ 99, εβ^+ ≈ 1
^193Po	0,42 s	7,10	(3/2−)	α = ?
^193m1Po	0,24 s		(13/2+)	α = ?
^194Po	0,392 s	6,987	0+	α = 93
^195Po	4,64 s	6,75 (α), 6,8 (εβ^+)	(3/2−)	α = 75, εβ^+ = 25
^195m1Po	1,92 s	6,98 (α), 7,03 (εβ^+), 0,23 (IT)	(13/2+)	α ≈ 90, εβ^+ ≈ 10, IT < 0,01
^196Po	5,8 s	6,657 (α), 4,6 (εβ^+)	0+	α ≈ 98, εβ^+ ≈ 2
^197Po	53,6 s	6,2 (εβ^+), 6,41 (α)	(3/2−)	εβ^+ = 56, α = 44
^197m1Po	25,8 s	6,614 (α), 6,614 (εβ^+), 0,204 (IT)	(13/2+)	α = 84, εβ^+ = 16, IT = 0,01
^198Po	1,77 min	6,309 (α), 4,02 (εβ^+)	0+	α = 57, εβ^+ = 43
^199Po	5,48 min	5,6 (εβ^+), 6,074 (α)	3/2−	εβ^+ = 88, α = 12
^199m1Po	4,13 min	5,91 (εβ^+), 6,384 (α), 0,310 (IT)	13/2+	εβ^+ = 59, α = 39 , IT = 2,1
^200Po	11,5 min	3,35 (εβ^+), 5,982 (α)	0+	εβ^+ = 88,9, α = 11,1
^201Po	15,3 min	4,88 (εβ^+), 5,799 (α)	3/2−	εβ^+ = 98,4, α = 1,6
^201m1Po	8,9 min	0,424 (IT), 5,304 (εβ^+), 6,223 (α)	13/2+	IT = 56, ε = 41, α ≈ 2,9
^202Po	44,7 min	2,82 (εβ^+), 5,701 (α)	0+	εβ^+ = 98,08, α = 1,92
^202m1Po	85 ns		8+
^202m2Po	200 ns		11−
^202m3Po	19 ns		12+
^202m4Po	11 ns		(15−)
^203Po	36,7 min	4,23 (εβ^+), 5,496 (α)	5/2−	εβ^+ = 99,89, α = 0,11
^203m1Po	45 s	0,641 (IT), 6,137 (α)	13/2+	IT ≈ 100, α ≈ 0,04
^204Po	3,53 h	2,34 (εβ^+), 5,485 (α)	0+	εβ^+ = 99,34, α = 0,66
^205Po	1,66 h	3,53 (εβ^+), 5,324 (α)	5/2−	εβ^+ = 99,96, α = 0,04
^205m1Po	58 ms		19/2−	IT
^206Po	8,8 d	1,846 (εβ^+), 5,326 (α)	0+	εβ^+ = 94,55, α = 5,45
^207Po	5,80 h	2,909 (εβ^+), 5,216 (α)	5/2−	εβ^+ = 99,979, α = 0,021
^207m1Po	2,8 s	1,383	19/2−	IT
^208Po	2,898 a	5,215 (α), 1,401 (εβ^+)	0+	α = 99,9958, εβ^+ = 0,0042
^209Po	102 a	4,879 (α), 1,893 (εβ^+)	1/2−	α = 99,52, εβ^+ = 0,48
^210Po	138,376 d	5,307	0+	α
^211Po	0,516 s	7,595	9/2+	α
^211m1Po	25,2 s	9,057 (α), 1,462 (IT)	(25/2+)	α = 99,984, IT = 0,016
^212Po	0,299 µs		0+	α
^212m1Po	45,1 s		(18+)	α = 99,93, IT = 0,07
^213Po	4,2 µs	8,537	9/2+	α
^214Po	164,3 µs	7,833	0+	α
^214m1Po	99 ps	1,416 (IT), 9,248 (α)	0+	IT = 0,14, α = 99,86
^215Po	1,781 ms	7,526 (α), 0,721 (β^−)	9/2+	α ≈ 100, β^− = 2,3·10^−4
^216Po	0,145 s	6,906	0+	α
^217Po	10 s			α > 95, β^− < 5
^218Po	3,10 min	6,115 (α), 0,265 (β^−)	0+	α = 99,980 , β^− = 0,020

₈₅ Astat

Iso­top	Halbwerts­zeit	Zerfallsenergie (MeV)	Spin / Parität	Zerfallsart(en) (%)	Masse (u)
^193At	40 ms			α = ?
^194At	40 ms	7,31		α = ?
^194m1At	250 ms			α = ?
^195At	0,63 s	7,4 (α), 8,0 (εβ^+)		α > 75, εβ^+ < 25
^196At	0,253 s	7,2		α ≈ 100
^197At	0,35 s	7,1 (α), 7,2 (εβ^+)	(9/2−)	α = 96, εβ^+ = 4
^197m1At	3,7 s	7,152 (α), 7,252 (εβ^+)	(1/2+)	α = ?, εβ^+ = ?
^198At	4,2 s	6,893 (α), 8,8 (εβ^+)	(3+)	α = 90, εβ^+ = 10
^198m1At	1,0 s	6,995 (α), 8,902 (εβ^+)	(10−)	α = 84, εβ^+ = 16
^199At	7,2 s	6,78 (α), 6,6 (εβ^+)	(9/2−)	α = 90, εβ^+ = 10
^200At	43 s	6,596 (α), 7,97 (εβ^+)	(3+)	α = 57, εβ^+ = 43
^200m1At	47 s	8,074 (εβ^+), 6,70 (α)	(7+)	εβ^+ < 57, α = 43
^200m2At	3,5 s	0,335 (IT), 6,931 (α), 8,305 (εβ^+)	(10−)	IT ≈ 85, α ≈ 10,5, ε ≈ 4,5
^201At	89 s	6,473 (εβ^+), 5,85 (α)	(9/2−)	α = 71, εβ^+ = 29
^202At	184 s	7,21 (εβ^+), 6,354 (α)	(2,3)+	εβ^+ = 82, α = 18
^202m1At	182 s	7,21 (εβ^+), 6,354 (α)	(7+)	εβ^+ = 91,3, α = 8,7
^202m2At	0,46 s	0,392 (IT), 7,602 (α), 6,746 (εβ^+)	(10−)	IT = 99,65, εβ^+ = 0,25, α = 0,096
^203At	7,4 min	5,06 (εβ^+), 6,21 (α)	9/2−	εβ^+ = 69, α = 31
^204At	9,2 min	6,48 (εβ^+), 6,07 (α)	7+	εβ^+ = 96,2 , α = 3,8
^204m1At	108 ms	0,587	(10−)	IT
^205At	26,2 min	4,54 (εβ^+), 6,02 (α)	9/2−	εβ^+ = 90, α = 10
^206At	30,0 min	5,72 (εβ^+), 5,888 (α)	(5)+	εβ^+ = 99,11, α = 0,89
^207At	1,80 h	3,91 (εβ^+), 5,873 (α)	9/2−	εβ^+ = 91,4, α = 8,6
^208At	1,63 h	4,973 (εβ^+), 5,751 (α)	6+	εβ^+ = 99,45, α = 0,55
^209At	5,41 h	3,486 (εβ^+), 5,757 (α)	9/2−	εβ^+ = 95,9, α = 4,1
^210At	8,1 h	3,981 (εβ^+), 5,631 (α)	(5)+	εβ^+ = 99,825, α = 0,175
^211At	7,214 h	0,786 (εβ^+), 5,982 (α)	9/2−	ε = 58,2, α = 41,8
^212At	0,314 s	7,829 (α), 1,754 (εβ^+), 0,043 (β^−)	(1−)	α ≈ 100, εβ^+ < 0,03, β^− < 2·10^−6
^212m1At	0,119 s	8,051 (α), 0,222 (IT)	(9−)	α > 99, IT < 1
^213At	125 ns	9,254	9/2−	α
^214At	558 ns	8,987	1−	α
^214m1At	265 ns	9,046		α < 100
^214m2At	760 ns	9,218	9−	α <= 100
^215At	0,10 ms	8,178	9/2−	α
^216At	0,30 ms	7,949 (α), 0,469 (ε), 2,003 (β^−)	1−	α ≈ 100, ε < 3·10^−7, β^− < 6·10^−3
^216m1At	0,1 ms	8,362	(9−)	α <= 100
^217At	32,3 ms	5,982 (α), 0,786 (εβ^+)	9/2−	α = 99,988, β^− = 0,012
^218At	1,5 s	6,874 (α), 2,883 (εβ^+)		α = 99,9, β^− = 0,1
^219At	56 s	6,39 (α), 1,70 (εβ^+)		α ≈ 97, β^− ≈ 3
^220At	3,71 min	3,65 (εβ^+), 6,05 (α)	3	α = 8, β^− = 92
^221At	2,3 min			β^−
^222At	54 s	4,4		β^−
^223At	50 s			β^− ≈ 100, α = 0,008

₈₆ Radon

Isotop	Halbwerts­zeit	Zerfalls­energie (MeV)	Spin / Parität	Zerfallsart(en) (%)	Masse (u)
^196Rn	3 ms		0+	α ≈ 100
^197Rn	65 ms		(3/2−)	α ≈ 100
^197m1Rn	19 ms		(13/2+)	α
^198Rn	64 ms	7,345 (α), 5,6 (εβ^+)	0+	α ≈ 100, εβ^+ ≈ 0
^199Rn	0,62 s	7,14 (α), 7,2 (εβ^+)	(3/2−)	α = 94, εβ^+ = 6
^199m1Rn	0,32 s		(13/2+)	α = 97, εβ^+ = 3
^200Rn	0,96 s	7,043 (α), 5,0 (εβ^+)	0+	α = 86${\displaystyle \left.^{+14}_{-4}\right.}$, εβ^+ < 18
^201Rn	7,0 s	6,86 (α), 6,6 (εβ^+)	(3/2−)	α ≈ 80, εβ^+ ≈ 20
^201m1Rn	3,8 s	7,14 (α), 6,88 (εβ^+), 0,28 (IT)	(13/2+)	α ≈ 90, εβ^+ ≈ 10, IT ≈ 0
^202Rn	10,0 s	6,774 (α), 4,44 (εβ^+)	0+	α = 86, εβ^+ = 14
^203Rn	45 s	6,63 (α), 6,0 (εβ^+)	(3/2, 5/2)−	α = 66, εβ^+ = 34
^203m1Rn	28 s	6,991 (α), 6,361 (εβ^+), 0,361 (IT)	(13/2+)	α ≈ 80, εβ^+ ≈ 20, IT < 0,1
^204Rn	1,24 min	6,546 (α), 3,82 (εβ^+)	0+	α = 73, εβ^+ = 27
^205Rn	2,8 min	5,24 (εβ^+), 6,39 (α)	5/2−	εβ^+ = 77, α = 23
^206Rn	5,67 min	6,384 (α), 3,31 (εβ^+)	0+	α = 63, εβ^+ = 37
^207Rn	9,25 min	4,61 (εβ^+), 6,251 (α)	5/2−	εβ^+ = 79, α = 21
^208Rn	24,35 min	6,26 (α), 2,85 (εβ^+)	0+	α = 62, εβ^+ = 38
^209Rn	28,5 min	3,93 (εβ^+), 6,155 (α)	5/2−	εβ^+ = 83, α = 17
^210Rn	2,4 h	6,159 (α), 2,374 (εβ^+)	0+	α = 96, εβ^+ = 4
^211Rn	14,6 h	2,892 (εβ^+), 5,965 (α)	1/2−	ε = 72,6, α = 27,4
^212Rn	23,9 min	6,385	0+	α
^213Rn	25,0 ms	8,243	(9/2+)	α
^214Rn	0,27 µs	9,208	0+	α
^214m1Rn	0,69 ns	1,443 (IT), 10,651 (α)	6+	IT < 100, α > 0
^214m2Rn	6,5 ns	1,625 (IT), 10,833 (α)	8+	IT ≈ 90, α ≈ 10
^215Rn	2,30 µs	8,839	9/2+	α
^216Rn	45 µs	8,20	0+	α
^217Rn	0,54 ms	7,889	9/2+	α
^218Rn	35 ms	7,263	0+	α
^219Rn	3,96 s	6,945	5/2+	α
^220Rn	55,6 s	6,405	0+	α
^221Rn	25 min	1,22 (β^−), 6,146 (α)	7/2(+)	β^− = 78, α = 22
^222Rn	3,8235 d	5,59	0+	α
^223Rn	23,2 min		7/2	β^− ≈ 100, α = 0,0004
^224Rn	107 min	0,8	0+	β^−
^225Rn	4,5 min		7/2−	β^−
^226Rn	7,4 min	1,4	0+	β^−
^227Rn	22,5 s			β^−
^228Rn	65 s	2,2	0+	β^−
^229Rn	12 s

₈₇ Francium

Iso­top	Halbwerts­zeit	Zerfallsenergie (MeV)	Spin / Parität	Zerfallsart(en) (%)	Masse (u)
^200Fr	19 ms		(3+)	α
^200m1Fr	0,57 s		(10−)	α
^201Fr	48 ms	7,54 (α), 7,9 (εβ^+)	(9/2−)	α ≈ 100, εβ^+ < 1
^202Fr	0,34 s	7,389 (α), 9,4 (εβ^+)	(3+)	α ≈ 97, εβ^+ ≈ 3
^202m1Fr	0,34 s	7,491 (α), 9,502 (εβ^+)	(10−)	α ≈ 97, εβ^+ ≈ 3
^203Fr	0,55 s	7,28 (α), 7,2 (εβ^+)	(9/2−)	α ≈ 95, εβ^+ ≈ 5
^204Fr	1,7 s	7,17 (α), 8,6 (εβ^+)	(3+)	α ≈ 80, εβ^+ ≈ 20
^204m1Fr	2,6 s	7,211	(7+)	α = ?
^204m2Fr	1 s	7,486 (α), 0,316 (IT)	(10−)	α ≈ 100, IT < 1
^205Fr	3,85 s	7,06 (α), 6,52 (εβ^+)	(9/2−)	α ≈ 100, εβ^+ < 1
^206Fr	15,9 s	6,926 (α), 7,75 (εβ^+)	(5+)	α = 84, εβ^+ = 16
^206m1Fr		6,926		α < 84
^206m2Fr	0,7 s	7,576 (α), 0,65 (IT)	(10−)	α = 0,3, IT = ?
^207Fr	14,8 s	6,9 (α), 5,71 (εβ^+)	9/2−	α = 95, εβ^+ = 5
^208Fr	59,1 s	6,77 (α), 6,99 (εβ^+)	7+	α = 90, εβ^+ = 10
^209Fr	50,0 s	6,777 (α), 5,16 (εβ^+)	9/2−	α = 89, εβ^+ = 11
^210Fr	3,18 min	6,7 (α), 6,262 (εβ^+)	6+	α = 60, εβ^+ = 40
^211Fr	3,10 min	6,66 (α), 4,605 (εβ^+)	9/2−	α > 80, ε < 20
^212Fr	20,0 min	5,117 (εβ^+), 6,529 (α)	5+	εβ^+ = 57, α = 43
^213Fr	34,6 s	6,905 (α), 2,148 (εβ^+)	9/2−	α ≈ 100, εβ^+ = 0,55
^214Fr	5,0 ms	8,589	(1−)	α
^214m1Fr	3,35 ms	8,711	(8−)	α
^215Fr	86 ns	9,540	9/2−	α
^215m1Fr	3,5 ns		(23/2)−
^216Fr	0,70 µs	9,175 (α), 2,729 (ε)	(1−)	α ≈ 100, ε < 2·10^−7
^216m1Fr	71 ns	0,086	(23/2)−	IT
^217Fr	22 µs	8,469	9/2−	α
^218Fr	1,0 ms	8,014	1−	α
^218m1Fr	22,0 ms	8,1 (α), 0,086 (IT)		α ≈ 100, IT = ?
^219Fr	20 ms	7,449	9/2−	α
^220Fr	27,4 s	6,801 (α), 1,209 (β^−)	1+	α ≈ 100, β^− = 0,35
^221Fr	4,9 min	6,458 (α), 2,033 (β^−), 31,292 (^14C)	5/2−	α ≈ 100, β^− = ?, ^14C = 8,8·10^−11
^222Fr	14,2 min	2,033	2−	β^−
^223Fr	21,8 min	1,149 (β^−), 5,43 (α)	3/2(−)	β^− ≈ 100, α = 0,006
^224Fr	3,33 min	2,83	1−	β^−
^225Fr	4,0 min	1,866	3/2−	β^−
^226Fr	49 s	3,67	1−	β^−
^227Fr	2,47 min	2,49	1/2+	β^−
^228Fr	38 s	4,34	2−	β^−
^229Fr	50 s			β^−
^230Fr	19,1 s			β^−
^231Fr	17,5 s			β^−
^232Fr	5 s			β^−

₈₈ Radium

Iso­top	Halbwerts­zeit	Zerfallsenergie (MeV)	Spin / Parität	Zerfallsart(en) (%)	Masse (u)
^202Ra	0,7 ms		0+	α
^203Ra	1,0 ms		(3/2−)	α ≈ 100
^203m1Ra	33 ms		(13/2+)	α ≈ 100
^204Ra	59 ms	7,65	0+	α ≈ 100
^205Ra	210 ms	7,51 (α), 7,0 (εβ^+)	(3/2−)	α = ?, εβ^+ = ?
^205m1Ra	170 ms		(13/2+)	α = ?
^206Ra	0,24 s	7,416	0+	α ≈ 100
^207Ra	1,3 s	7,27 (α), 6,4 (εβ^+)	(5/2, 3/2)−	α ≈ 90, εβ^+ ≈ 10
^207m1Ra	55 ms	0,47 (IT), 7,74 (α), 6,87 (εβ^+)	(13/2+)	IT ≈ 85, α ≈ 15, εβ^+ ≈ 0,55
^208Ra	1,3 s	7,273 (α), 4,33 (εβ^+)	0+	α = 95, εβ^+ = 5
^209Ra	4,6 s		5/2−	α ≈ 90, εβ^+ ≈ 10
^210Ra	3,7 s	7,157 (α), 3,77 (εβ^+)	0+	α ≈ 96, εβ^+ ≈ 4
^211Ra	13 s	7,046 (α), 5,0 (ε)	5/2(−)	α > 93, ε < 7
^212Ra	13,0 s	6,859 (α), 3,35 (εβ^+)	0+	α ≈ 85, εβ^+ ≈ 15
^213Ra	2,74 min	6,859 (α), 3,88 (εβ^+)	1/2−	α = 80, εβ^+ = 20
^213m1Ra	2,1 ms	1,77 (IT), 8,628 (α)		IT ≈ 99, α ≈ 1
^214Ra	2,46 s	7,273 (α), 1,059 (ε)	0+	α ≈ 100, ε = 0,059
^215Ra	1,59 ms	8,864	(9/2+)	α
^216Ra	182 ns	9,526 (α), 0,308 (ε)	0+	α ≈ 100, ε < 1·10^−8
^216m1Ra	<0,2 ns	1,507 (IT), 11,034 (α)	6+	α = 0,58
^216m2Ra	1,24 ns	1,711 (IT), 11,237 (α)	8+	α = 1,86
^216m3Ra	0,6 ns	2,026 (IT), 11,552 (α)	10+	α = 0,12
^217Ra	1,6 µs	9,161	(9/2+)	α
^218Ra	25,6 µs	8,546	0+	α
^219Ra	10 ms	8,130	(7/2)+	α
^220Ra	18 ms	7,595	0+	α
^221Ra	28 s	6,886 (α), 32,395 (^14C)	5/2+	α ≈ 100, ^14C = 1,2·10^−10
^222Ra	38,0 s	6,681 (α), 33,049 (^14C)	0+	α ≈ 100, ^14C = 3,0·10^−8
^223Ra	11,435 d	5,979 (α), 31,828 (^14C)	3/2+	α ≈ 100, ^14C = 6,4·10^−8
^224Ra	3,66 d	5,789 (α), 30,535 (^14C)	0+	α ≈ 100, ^14C = 4,3·10^−9
^225Ra	14,9 d	0,357	1/2+	β^−
^226Ra	1602 a	4,871 (α), 28,196 (^14C)	0+	α ≈ 100, ^14C = 3,2·10^−9
^227Ra	42,2 min	1,325	3/2+	β^−
^228Ra	5,75 a	0,046	0+	β^−
^229Ra	4,0 min	1,76	5/2(+)	β^−
^230Ra	93 min	0,99	0+	β^−
^231Ra	103 s		(7/2−, 1/2+)	β^−
^232Ra	250 s		0+	β^−
^233Ra	30 s			β^−
^234Ra	30 s		0+	β^−

₈₉ Actinium

Iso­top	Halbwerts­zeit	Zerfallsenergie (MeV)	Spin / Parität	Zerfallsart(en) (%)	Masse (u)
^206Ac	22 ms		(3+)	α = ?
^206m1Ac	33 ms		(10−)
^207Ac	22 ms		(9/2−)	α ≈ 100
^208Ac	95 ms		(3+)	α = ?
^208m1Ac	25 ms		(10−)	α = ?
^209Ac	0,10 s	7,73 (α), 7,11 (εβ^+)	(9/2−)	α ≈ 99, εβ^+ ≈ 1
^210Ac	0,35 s	7,61 (α), 8,2 (εβ^+)		α ≈ 96, εβ^+ ≈ 4
^211Ac	0,25 s	7,62		α ≈ 100
^212Ac	0,93 s	7,52 (α), 7,48 (εβ^+)		α ≈ 97, εβ^+ ≈ 3
^213Ac	0,80 s	7,5		α < 100
^214Ac	8,2 s	7,35 (α), 6,34 (ε)		α > 89, ε < 11
^215Ac	0,17 s	7,75 (α), 3,49 (εβ^+)	9/2−	α ≈ 100, εβ^+ = 0,09
^216Ac	0,33 ms	9,243	(1−)	α
^216m1Ac	0,33 ms	0,037 (IT), 9,28 (α)	(9−)	IT ≈ 100, α ≤ 2
^217Ac	69 ns	9,832 (α), 2,819 (εβ^+)	9/2−	α ≈ 100, εβ^+ < 2
^217m1Ac	740 ns		(29/2)+
^218Ac	1,08 µs	9,38	(1−)	α
^219Ac	11,8 µs	8,83 (α)	9/2−	α ≈ 100, εβ^+ ≈ 1·10^−6
^220Ac	26,4 ms	8,35 (α), 3,48 (εβ^+)	(3−)	α ≈ 100, εβ^+ = 5·10^−4
^221Ac	52 ms	7,78	(3/2−)	α
^222Ac	5,0 s	7,137 (α), 2,298 (εβ^+)	1−	α = 99, εβ^+ = 1
^222m1Ac	63 s	7,137 (α), 0 (IT), 2,298 (εβ^+)		α > 88, IT < 10, εβ^+ < 0,7
^223Ac	2,10 min	6,783 (α), 0,586 (ε), 33,064 (^14C), 39,473 (^15N)	(5/2−)	α ≈ 100, ε = 1, ^14C = 3·10^−9, ^15N = 2·10^−11
^224Ac	2,78 h	1,403 (ε), 6,327 (α), 0,232 (β^−)	0−	ε = 90,9${\displaystyle \left.^{+14}_{-10}\right.}$, α = 9,1${\displaystyle \left.^{+20}_{-14}\right.}$, β^− < 1,6
^225Ac	10,0 d	5,935 (α), 30,476 (^14C)	(3/2−)	α ≈ 100, ^14C = 6,0·10^−10
^226Ac	29,37 h	1,117 (β^−), 0,64 (ε), 5,563 (α)	(1)	β^− ≈ 83, ε = 17, α = 6·10^−3
^227Ac	21,773 a	0,045 (β^−), 5,042 (α)	3/2−	β^− ≈ 100, α = 1,380
^228Ac	6,15 h	2,127	3+	β^−
^229Ac	62,7 min	1,1	(3/2+)	β^−
^230Ac	122 s	2,7	(1+)	β^−
^231Ac	7,5 min	2,1	(1/2+)	β^−
^232Ac	119 s	3,7	(1+)	β^−
^233Ac	145 s		(1/2+)	β^−
^234Ac	44 s			β^−

₉₀ Thorium

Iso­top	Halbwerts­zeit	Zerfallsenergie (MeV)	Spin / Parität	Zerfallsart(en) (%)	NH (%)	Masse (u)
^210Th	9 ms		0+	α ≈ 100
^211Th	37 ms			α = ?, ε = ?
^212Th	30 ms	7,952 (α), 4,76 (εβ^+)	0+	α ≈ 100, εβ^+ ≈ 0,3
^213Th	140 ms	7,84		α < 100
^214Th	100 ms	7,826	0+	α
^215Th	1,2 s	7,666	(1/2−)	α
^216Th	0,028 s	8,071 (α), 2,17 (εβ^+)	0+	α ≈ 100, εβ^+ ≈ 0,01
^216m1Th	180 µs	2,028 (IT), 10,099 (α)	(8+, 11−)	IT ≈ 97, α ≈ 3
^217Th	0,252 ms	9,424	(9/2+)	α
^218Th	109 ns	9,849	0+	α
^219Th	1,05 µs	9,51		α ≈ 100, εβ^+ ≈ 1·10^−7
^220Th	9,7 µs	8,953 (α), 0,91 (εβ^+)	0+	α ≈ 100, ε = 2·10^−7
^221Th	1,68 ms	8,628	(7/2+)	α
^222Th	2,8 ms	8,129	0+	α
^223Th	0,60 s	7,567	(5/2)+	α
^224Th	1,05 s	7,304	0+	α
^225Th	8,72 min	6,922 (α), 0,675 (ε)	(3/2)+	α ≈ 90, ε ≈ 10
^226Th	30,57 min	6,451 (α), 15,3 (^18O)	0+	α ≈ 100, ^18O = 9,2·10^−11
^227Th	18,72 d	0,638 (γ), 6,051 (α)	(1/2+)	α
^228Th	1,9116 a	0,087 (γ), 5,520 (α), 44,722 (^20O)	0+	α ≈ 100, ^20O = 1,13·10^−11
^229Th	7917 a	5,168	5/2+	α
^230Th	7,538·10^4 a	0,2 (γ), 4,770 (α), 57,761 (^24Ne)	0+	α ≈ 100, ^24Ne = 5,6·10^−11, SF < 3,8·10^−12
^231Th	25,52 h	0,085 (γ), 0,389 (β^−), 4,213 (α)	5/2+	β^− ≈ 100, α ≈ 1·10^−8
^232Th	1,405·10^10 a	4,083 (α), 0,055 (γ), 54,509 (^24Ne), 55,964 (^26Ne)	0+	α ≈ 100, SF < 1,8·10^−9, ^24Ne = 2,8·10^−10, ^26Ne = 2,8·10^−10	100
^233Th	22,3 min	1,245	1/2+	β^−
^234Th	24,10 d	0,09 (γ), 0,273	0+	β^−
^235Th	7,1 min	1,93	(1/2+)	β^−
^236Th	37,5 min		0+	β^−
^237Th	5,0 min			β^−

Siehe auch: Liste der Isotope#Weblinks