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Isotopes of Barium (Z=56)
Isotope	Half-life	Spin Parity	Decay Mode(s) or Abundance
¹¹⁴Ba	0.43 s	0+	%EC+%B+ ~ 100, %A=?, %12C ~ 3E-5
¹¹⁵Ba	0.4 s		%EC+%B+=100
¹¹⁶Ba	0.3 s	0+	%EC+%B+=100
¹¹⁷Ba	1.75 s	(3/2)	%EC+%B+=100, %ECP=?, %ECA=?
¹¹⁸Ba	5.5 s	0+	%EC+%B+=100
¹¹⁹Ba	5.4 s	(5/2+)	%EC+%B+=100, %ECP < 25 2
¹²⁰Ba	32 s	0+	%EC+%B+=100
¹²¹Ba	29.7 s	5/2(+)	%EC+%B+=100, %ECP=0.02 1
¹²²Ba	1.95 m	0+	%EC+%B+=100
¹²³Ba	2.7 m	5/2+	%EC+%B+=100
¹²⁴Ba	11.0 m	0+	%EC+%B+=100
¹²⁵Ba	3.5 m	1/2(+)	%EC+%B+=100
¹²⁶Ba	100 m	0+	%EC+%B+ =100
¹²⁷Ba	12.7 m	1/2+	%EC+%B+=100
^127m1Ba	1.9 s	7/2-	%IT=100
¹²⁸Ba	2.43 d	0+	%EC=100
¹²⁹Ba	2.23 h	1/2+	%EC+%B+=100
^129m1Ba	2.16 h	7/2+	%EC+%B+ < 100, %IT=?
¹³⁰Ba	stable	0+	%Abundance=0.106 2
^130m1Ba	11 ms	8-	%IT=100
¹³¹Ba	11.50 d	1/2+	%EC+%B+=100
^131m1Ba	14.6 m	9/2-	%IT=100
¹³²Ba	stable	0+	%Abundance=0.101 2
¹³³Ba	10.51 y	1/2+	%EC=100
^133m1Ba	38.9 h	11/2-	%EC=0.0096 11, %IT=99.9904 11
¹³⁴Ba	stable	0+	%Abundance=2.417 27
^134m1Ba	2.63 us	(10+)
¹³⁵Ba	stable	3/2+	%Abundance=6.592 18
^135m1Ba	28.7 h	11/2-	%IT=100
¹³⁶Ba	stable	0+	%Abundance=7.854 36
^136m1Ba	0.3084 s	7-	%IT=100
¹³⁷Ba	stable	3/2+	%Abundance=11.23 4
^137m1Ba	2.552 m	11/2-	%IT=100
¹³⁸Ba	stable	0+	%Abundance=71.70 7
¹³⁹Ba	83.06 m	7/2-	%B-=100
¹⁴⁰Ba	12.752 d	0+	%B-=100
¹⁴¹Ba	18.27 m	3/2-	%B-=100
¹⁴²Ba	10.6 m	0+	%B-=100
¹⁴³Ba	14.33 s	5/2-	%B-=100
¹⁴⁴Ba	11.5 s	0+	%B-=100, %B-N=3.6 7
¹⁴⁵Ba	4.31 s	5/2-	%B-=100
¹⁴⁶Ba	2.22 s	0+	%B-=100
¹⁴⁷Ba	0.893 s	(3/2+)	%B-=100, %B-N=0.06 3
¹⁴⁸Ba	0.607 s	0+	%B-=100, %B-N=0.4 3
¹⁴⁹Ba	0.344 s		%B-=100, %B-N=0.43 12
¹⁵⁰Ba	0.3 s	0+	%B-=100, %B-N=?
¹⁵¹Ba
¹⁵²Ba		0+
¹⁵³Ba

Isotopes of Barium (Z=56)