Isotopes of barium
List of isotopes
Bold for isotopes with half-lives longer than the age of the universe (nearly stable) Abbreviations: CD: Cluster decay EC: Electron capture IT: Isomeric transition Bold for stable isotopes, bold italics for nearly-stable isotopes (half-life longer than the age of the universe) Cluster decay is predicted but had never been observed.

Isotopes of barium

Section Title: List of isotopes
Table Section Text: Bold for isotopes with half-lives longer than the age of the universe (nearly stable) Abbreviations: CD: Cluster decay EC: Electron capture IT: Isomeric transition Bold for stable isotopes, bold italics for nearly-stable isotopes (half-life longer than the age of the universe) Cluster decay is predicted but had never been observed.

nuclide symbol	Z(p)	N(n)	isotopic mass (u)	half-life	decay mode(s)	daughter isotope(s)	nuclear spin and parity	representative isotopic composition (mole fraction)	range of natural variation (mole fraction)

excitation energy

114Ba	56	58	113.95068(15)	530(230) ms [0.43(+30−15) s]	β+, p (99.59%)	113Xe	0+

α (.37%)	110Xe

β+ (.04%)	114Cs

CD (<.0034%)	102Sn, 12C

115Ba	56	59	114.94737(64)#	0.45(5) s	β+	115Cs	(5/2+)#

β+, p	114Xe

116Ba	56	60	115.94138(43)#	1.3(2) s	β+	116Cs	0+

β+, p	115Xe

117Ba	56	61	116.93850(32)#	1.75(7) s	β+	117Cs	(3/2)(+#)

β+, α	113I

β+, p	116Xe

118Ba	56	62	117.93304(21)#	5.2(2) s	β+	118Cs	0+

β+, p	117Xe

119Ba	56	63	118.93066(21)	5.4(3) s	β+	119Cs	(5/2+)

β+, p	118Xe

120Ba	56	64	119.92604(32)	24(2) s	β+	120Cs	0+

121Ba	56	65	120.92405(15)	29.7(15) s	β+ (99.98%)	121Cs	5/2(+)

β+, p (.02%)	120Xe

122Ba	56	66	121.91990(3)	1.95(15) min	β+	122Cs	0+

123Ba	56	67	122.918781(13)	2.7(4) min	β+	123Cs	5/2(+)

124Ba	56	68	123.915094(13)	11.0(5) min	β+	124Cs	0+

125Ba	56	69	124.914473(12)	3.5(4) min	β+	125Cs	1/2(+#)

126Ba	56	70	125.911250(13)	100(2) min	β+	126Cs	0+

127Ba	56	71	126.911094(12)	12.7(4) min	β+	127Cs	1/2+

127mBa	80.33(12) keV	1.9(2) s	IT	127Ba	7/2−

128Ba	56	72	127.908318(11)	2.43(5) d	β+	128Cs	0+

129Ba	56	73	128.908679(12)	2.23(11) h	β+	129Cs	1/2+

129mBa	8.42(6) keV	2.16(2) h	β+	129Cs	7/2+#

IT	129Ba

130Ba	56	74	129.9063208(30)	1.6(±1.1)×1021 y	Double EC	130Xe	0+	0.00106(1)

130mBa	2475.12(18) keV	9.54(14) ms	IT	130Ba	8−

131Ba	56	75	130.906941(3)	11.50(6) d	β+	131Cs	1/2+

131mBa	187.14(12) keV	14.6(2) min	IT	131Ba	9/2−

132Ba	56	76	131.9050613(11)	Observationally Stable	0+	0.00101(1)

133Ba	56	77	132.9060075(11)	10.51(5) y	EC	133Cs	1/2+

133mBa	288.247(9) keV	38.9(1) h	IT (99.99%)	133Ba	11/2−

EC (.0096%)	133Cs

134Ba	56	78	133.9045084(4)	Stable	0+	0.02417(18)

135Ba	56	79	134.9056886(4)	Stable	3/2+	0.06592(12)

135mBa	268.22(2) keV	28.7(2) h	IT	135Ba	11/2−

136Ba	56	80	135.9045759(4)	Stable	0+	0.07854(24)

136mBa	2030.466(18) keV	308.4(19) ms	IT	136Ba	7−

137Ba	56	81	136.9058274(5)	Stable	3/2+	0.11232(24)

137m1Ba	661.659(3) keV	2.552(1) min	IT	137Ba	11/2−

137m2Ba	2349.1(4) keV	0.59(10) µs	(17/2−)

138Ba	56	82	137.9052472(5)	Stable	0+	0.71698(42)

138mBa	2090.54(6) keV	800(100) ns	6+

139Ba	56	83	138.9088413(5)	83.06(28) min	β−	139La	7/2−

140Ba	56	84	139.910605(9)	12.752(3) d	β−	140La	0+

141Ba	56	85	140.914411(9)	18.27(7) min	β−	141La	3/2−

142Ba	56	86	141.916453(7)	10.6(2) min	β−	142La	0+

143Ba	56	87	142.920627(14)	14.5(3) s	β−	143La	5/2−

144Ba	56	88	143.922953(14)	11.5(2) s	β−	144La	0+

145Ba	56	89	144.92763(8)	4.31(16) s	β−	145La	5/2−

146Ba	56	90	145.93022(8)	2.22(7) s	β− (99.98%)	146La	0+

β−, n (.02%)	145La

147Ba	56	91	146.93495(22)#	0.893(1) s	β− (99.94%)	147La	(3/2+)

β−, n (.06%)	146La

148Ba	56	92	147.93772(9)	0.612(17) s	β− (99.6%)	148La	0+

β−, n (.4%)	147La

149Ba	56	93	148.94258(21)#	344(7) ms	β− (99.57%)	149La	3/2−#

β−, n (.43%)	148La

150Ba	56	94	149.94568(43)#	300 ms	β−	150La	0+

β−, n (rare)	149La

151Ba	56	95	150.95081(43)#	200# ms [>300 ns]	β−	151La	3/2−#

152Ba	56	96	151.95427(54)#	100# ms	β−	152La	0+

153Ba	56	97	152.95961(86)#	80# ms	β−	153La	5/2−#

Sentence(s)

Barium-114 undergo cluster decay, emitting ¹²C and ¹⁰²Sn.

final_sentence: Barium-114 undergo cluster decay, emitting ¹²C and ¹⁰²Sn.