Isotopes of antimony
List of isotopes
Abbreviations: 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) Fission product

Isotopes of antimony

Section Title: List of isotopes
Table Section Text: Abbreviations: 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) Fission product

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

103Sb	51	52	102.93969(32)#	100# ms [>1.5 µs]	β+	103Sn	5/2+#

104Sb	51	53	103.93647(39)#	0.47(13) s [0.44(+15−11) s]	β+ (86%)	104Sn

p (7%)	103Sn

β+, p (7%)	103In

α (<1%)	100In

105Sb	51	54	104.93149(11)	1.12(16) s	β+ (99%)	105Sn	(5/2+)

p (1%)	104Sn

β+, p (<1%)	104In

106Sb	51	55	105.92879(34)#	0.6(2) s	β+	106Sn	(4+)

106mSb	1000(500)# keV	220(20) ns

107Sb	51	56	106.92415(32)#	4.0(2) s	β+	107Sn	5/2+#

108Sb	51	57	107.92216(22)#	7.4(3) s	β+	108Sn	(4+)

β+, p (rare)	107In

109Sb	51	58	108.918132(20)	17.3(5) s	β+	109Sn	5/2+#

110Sb	51	59	109.91675(22)#	23.0(4) s	β+	110Sn	(4+)

111Sb	51	60	110.91316(3)	75(1) s	β+	111Sn	(5/2+)

112Sb	51	61	111.912398(19)	51.4(10) s	β+	112Sn	3+

113Sb	51	62	112.909372(19)	6.67(7) min	β+	113Sn	5/2+

114Sb	51	63	113.90927(3)	3.49(3) min	β+	114Sn	(3+)

114mSb	495.5(7) keV	219(12) µs	(8−)

115Sb	51	64	114.906598(17)	32.1(3) min	β+	115Sn	5/2+

116Sb	51	65	115.906794(6)	15.8(8) min	β+	116Sn	3+

116m1Sb	93.99(5) keV	194(4) ns	1+

116m2Sb	380(40) keV	60.3(6) min	β+	116Sn	8−

117Sb	51	66	116.904836(10)	2.80(1) h	β+	117Sn	5/2+

118Sb	51	67	117.905529(4)	3.6(1) min	β+	118Sn	1+

118m1Sb	50.814(21) keV	20.6(6) µs	(3)+

118m2Sb	250(6) keV	5.00(2) h	β+	118Sn	8−

119Sb	51	68	118.903942(9)	38.19(22) h	EC	119Sn	5/2+

119m1Sb	2553.6(3) keV	130(3) ns	(19/2−)

119m2Sb	2852(7) keV	850(90) ms	IT	119Sb	27/2+#

120Sb	51	69	119.905072(8)	15.89(4) min	β+	120Sn	1+

120m1Sb	0(100)# keV	5.76(2) d	β+	120Sn	8−

120m2Sb	78.16(5) keV	246(2) ns	(3+)

120m3Sb	2328.3(6) keV	400(8) ns	(6)

121Sb	51	70	120.9038157(24)	Stable	5/2+	0.5721(5)

122Sb	51	71	121.9051737(24)	2.7238(2) d	β− (97.59%)	122Te	2−

β+ (2.41%)	122Sn

122m1Sb	61.4131(5) keV	1.86(8) µs	3+

122m2Sb	137.4726(8) keV	0.53(3) ms	(5)+

122m3Sb	163.5591(17) keV	4.191(3) min	IT	122Sb	(8)−

123Sb	51	72	122.9042140(22)	Stable	7/2+	0.4279(5)

124Sb	51	73	123.9059357(22)	60.20(3) d	β−	124Te	3−

124m1Sb	10.8627(8) keV	93(5) s	IT (75%)	124Sb	5+

β− (25%)	124Te

124m2Sb	36.8440(14) keV	20.2(2) min	(8)−

124m3Sb	40.8038(7) keV	3.2(3) µs	(3+,4+)

125Sb	51	74	124.9052538(28)	2.75856(25) y	β−	125mTe	7/2+

126Sb	51	75	125.90725(3)	12.35(6) d	β−	126Te	(8−)

126m1Sb	17.7(3) keV	19.15(8) min	β− (86%)	126Te	(5+)

IT (14%)	126Sb

126m2Sb	40.4(3) keV	~11 s	IT	126m1Sb	(3−)

126m3Sb	104.6(3) keV	553(5) ns	(3+)

127Sb	51	76	126.906924(6)	3.85(5) d	β−	127mTe	7/2+

128Sb	51	77	127.909169(27)	9.01(4) h	β−	128Te	8−

128mSb	10(7) keV	10.4(2) min	β− (96.4%)	128Te	5+

IT (3.6%)	128Sb

129Sb	51	78	128.909148(23)	4.40(1) h	β−	129mTe	7/2+

129m1Sb	1851.05(10) keV	17.7(1) min	β− (85%)	129Te	(19/2−)

IT (15%)	129Sb

129m2Sb	1860.90(10) keV	>2 µs	(15/2−)

129m3Sb	2138.9(5) keV	1.1(1) µs	(23/2+)

130Sb	51	79	129.911656(18)	39.5(8) min	β−	130Te	(8−)#

130mSb	4.80(20) keV	6.3(2) min	β−	130Te	(4,5)+

131Sb	51	80	130.911982(22)	23.03(4) min	β−	131mTe	(7/2+)

132Sb	51	81	131.914467(15)	2.79(5) min	β−	132Te	(4+)

132m1Sb	200(30) keV	4.15(5) min	β−	132Te	(8−)

132m2Sb	254.5(3) keV	102(4) ns	(6−)

133Sb	51	82	132.915252(27)	2.5(1) min	β−	133mTe	(7/2+)

134Sb	51	83	133.92038(5)	0.78(6) s	β−	134Te	(0-)

134mSb	80(110) keV	10.07(5) s	β− (99.9%)	134Te	(7−)

β−, n (.091%)	133Te

135Sb	51	84	134.92517(11)	1.68(2) s	β− (82.4%)	135Te	(7/2+)

β−, n (17.6%)	134Te

136Sb	51	85	135.93035(32)#	0.923(14) s	β− (83%)	136Te	1−#

β−, n (17%)	135Te

136mSb	173(3) keV	570(50) ns	6−#

137Sb	51	86	136.93531(43)#	450(50) ms	β−	137Te	7/2+#

β−, n	136Te

138Sb	51	87	137.94079(32)#	500# ms [>300 ns]	β−	138Te	2−#

β−, n	137Te

139Sb	51	88	138.94598(54)#	300# ms [>300 ns]	β−	139Te	7/2+#

Sentence(s)

¹²¹Sb and ¹²³Sb are two stable isotopes of Antimony.

final_sentence: ¹²¹Sb and ¹²³Sb are two stable isotopes of Antimony.