Isotopes of Arsenic (Z=33)
Click on an isotope to get more information about its decay
Isotope
 Halflife
 Spin
Parity
 Decay Mode(s) or
Abundance 
^{ 60}As   

^{ 61}As   

^{ 62}As   

^{ 63}As   

^{ 64}As   

^{ 65}As  0.19 s  
%EC+%B+=100

^{ 66}As  95.77 ms  
%EC+%B+=100

^{ 67}As  42.5 s  (5/2) 
%EC+%B+=100

^{ 68}As  151.6 s  3+ 
%EC+%B+=100

^{ 69}As  15.2 m  5/2 
%EC+%B+=100

^{ 70}As  52.6 m  4(+) 
%EC+%B+=100

^{ 71}As  65.28 h  5/2 
%EC+%B+=100

^{ 72}As  26.0 h  2 
%EC+%B+=100

^{ 73}As  80.30 d  3/2 
%EC=100

^{ 74}As  17.77 d  2 
%B=34 2, %EC+%B+=66 2

^{ 75}As  stable  3/2 
%Abundance=100

^{ 75m1}As  16.79 ms  9/2+ 
%IT=100

^{ 76}As  1.0778 d  2 
%B=100

^{ 77}As  38.83 h  3/2 
%B=100

^{ 78}As  90.7 m  2 
%B=100

^{ 79}As  9.01 m  3/2 
%B=100

^{ 80}As  15.2 s  1+ 
%B=100

^{ 81}As  33.3 s  3/2 
%B=100

^{ 82}As  19.1 s  (1+) 
%B=100

^{ 82m1}As  13.6 s  (5) 
%B=100

^{ 83}As  13.4 s  (5/2,3/2) 
%B=100

^{ 84}As  4.5 s  (3) 
%B=100, %BN=0.28 4

^{ 85}As  2.021 s  (3/2) 
%B=100, %BN=59.4 24

^{ 86}As  0.945 s  
%B=100, %BN=33 4

^{ 87}As  0.48 s  (3/2) 
%B=100, %BN=15.4 22

^{ 88}As   

^{ 89}As   

^{ 90}As   
%B=?

^{ 91}As   (3/2) 
%B=?

^{ 92}As   
%B=?

Last update on
September 3, 2015