Lead/Isotopes

Isotopes of Lead (Z=82)

Isotope	Half-life	spin	Abundance or Decay
181Pb	45 ms	(13/2+)	%A ~ 98
182Pb	55 ms	0+	%A=?
183Pb	300 ms	(1/2-)	%A ~ 94, %EC+%B+ ~ 6
184Pb	0.55 s	0+	%A=?
185Pb	4.1 s		%A < 100
186Pb	4.83 s	0+	%A=54 20, %EC+%B+=46 20
187Pb	18.3 s	(13/2+)	%EC+%B+=98.0, %A=2.0
187m1Pb	15.2 s		%A=?, %EC+%B+=?
188Pb	24 s	0+	%EC+%B+=91.5 13, %A=8.5 13
189Pb	51 s		%EC+%B+ > 99, %A ~ 0.4
190Pb	1.2 m	0+	%EC+%B+=99.79 7, %A=0.21 7
191Pb	1.33 m	(3/2-)	%EC+%B+=99.987 5, %A=0.013 5
191m1Pb	2.18 m	(13/2+)	%EC+%B+=100, %A ~ 0.02
192Pb	3.5 m	0+	%EC+%B+=99.9941 6, %A=0.0059 6
193Pb	2 m	(3/2-)	%EC+%B+=?
193m1Pb	5.8 m	(13/2+)	%EC+%B+=100

193m1Pb 5.8 m (13/2+) %EC+%B+=100 194Pb 12.0 m 0+ %EC+%B+=100, %A=7.3E-6 29 195Pb 15 m 3/2- %EC+%B+=100 195m1Pb 15.0 m 13/2+ %EC+%B+=100 196Pb 37 m 0+ %EC+%B+=100, %A < 3E-5 197Pb 8 m 3/2- %EC+%B+=100 197m1Pb 43 m 13/2+ %EC+%B+=81 2, %IT=19 2 198Pb 2.40 h 0+ %EC+%B+=100 199Pb 90 m 3/2- %EC+%B+=100 199m1Pb 12.2 m 13/2+ %IT=93, %EC+%B+=7 200Pb 21.5 h 0+ %EC=100 201Pb 9.33 h 5/2- %EC+%B+=100 201m1Pb 61 s 13/2+ %IT>99, %EC+%B+<1 202Pb 5.25e4 y 0+ %EC=100, %A<1 202m1Pb 3.53 h 9- %IT=90.5 5, %EC+%B+=9.5 5 203Pb 51.873 h 5/2- %EC=100 203m1Pb 6.3 s 13/2+ %IT=100 203m2Pb 0.48 s 29/2- %IT=100 204Pb 1.4e17 y 0+ %Abundance=1.4 1 204m1Pb 67.2 m 9- %IT=100 205Pb 1.53e+7 y 5/2- %EC=100 205m1Pb 5.54 ms 13/2+ %IT=100 206Pb stable 0+ %Abundance=24.1 1 207Pb stable 1/2- %Abundance=22.1 1 207m1Pb 0.805 s 13/2+ %IT=100 208Pb stable 0+ %Abundance=52.4 1 209Pb 3.253 h 9/2+ %B-=100 210Pb 22.3 y 0+ %B-=100, %A=1.9E-6 4 211Pb 36.1 m 9/2+ %B- =100 212Pb 10.64 h 0+ %B-=100 213Pb 10.2 m (9/2+) %B-=100 214Pb 26.8 m 0+ %B-=100 215Pb 36 s (5/2+) %B-=100