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Isotopes of Arsenic (Z=33)
Click on an isotope to get more information about its decay
Isotope	Half-life	Spin Parity	Decay Mode(s) or Abundance
⁶⁰As
⁶¹As
⁶²As
⁶³As
⁶⁴As
⁶⁵As	0.19 s		%EC+%B+=100
⁶⁶As	95.77 ms		%EC+%B+=100
⁶⁷As	42.5 s	(5/2-)	%EC+%B+=100
⁶⁸As	151.6 s	3+	%EC+%B+=100
⁶⁹As	15.2 m	5/2-	%EC+%B+=100
⁷⁰As	52.6 m	4(+)	%EC+%B+=100
⁷¹As	65.28 h	5/2-	%EC+%B+=100
⁷²As	26.0 h	2-	%EC+%B+=100
⁷³As	80.30 d	3/2-	%EC=100
⁷⁴As	17.77 d	2-	%B-=34 2, %EC+%B+=66 2
⁷⁵As	stable	3/2-	%Abundance=100
^75m1As	16.79 ms	9/2+	%IT=100
⁷⁶As	1.0778 d	2-	%B-=100
⁷⁷As	38.83 h	3/2-	%B-=100
⁷⁸As	90.7 m	2-	%B-=100
⁷⁹As	9.01 m	3/2-	%B-=100
⁸⁰As	15.2 s	1+	%B-=100
⁸¹As	33.3 s	3/2-	%B-=100
⁸²As	19.1 s	(1+)	%B-=100
^82m1As	13.6 s	(5-)	%B-=100
⁸³As	13.4 s	(5/2-,3/2-)	%B-=100
⁸⁴As	4.5 s	(3-)	%B-=100, %B-N=0.28 4
⁸⁵As	2.021 s	(3/2-)	%B-=100, %B-N=59.4 24
⁸⁶As	0.945 s		%B-=100, %B-N=33 4
⁸⁷As	0.48 s	(3/2-)	%B-=100, %B-N=15.4 22
⁸⁸As
⁸⁹As
⁹⁰As			%B-=?
⁹¹As		(3/2-)	%B-=?
⁹²As			%B-=?

Isotopes of Arsenic (Z=33)