Isotopes of niobium
List of isotopes
Abbreviations: EC: Electron capture IT: Isomeric transition Bold for stable isotopes, bold italic for near-stable isotopes (half-life longer than the age of the universe)

Isotopes of niobium

Section Title: List of isotopes
Table Section Text: Abbreviations: EC: Electron capture IT: Isomeric transition Bold for stable isotopes, bold italic for near-stable isotopes (half-life longer than the age of the universe)

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

81Nb	41	40	80.94903(161)#	<44 ns	β+, p	80Y	3/2−#

p	80Zr

β+	81Zr

82Nb	41	41	81.94313(32)#	51(5) ms	β+	82Zr	0+

83Nb	41	42	82.93671(34)	4.1(3) s	β+	83Zr	(5/2+)

84Nb	41	43	83.93357(32)#	9.8(9) s	β+ (>99.9%)	84Zr	3+

β+, p (<.1%)	83Y

84mNb	338(10) keV	103(19) ns	(5−)

85Nb	41	44	84.92791(24)	20.9(7) s	β+	85Zr	(9/2+)

85mNb	759.0(10) keV	12(5) s	(1/2−)

86Nb	41	45	85.92504(9)	88(1) s	β+	86Zr	(6+)

86mNb	250(160)# keV	56(8) s	β+	86Zr	high

87Nb	41	46	86.92036(7)	3.75(9) min	β+	87Zr	(1/2−)

87mNb	3.84(14) keV	2.6(1) min	β+	87Zr	(9/2+)#

88Nb	41	47	87.91833(11)	14.55(6) min	β+	88Zr	(8+)

88mNb	40(140) keV	7.8(1) min	β+	88Zr	(4−)

89Nb	41	48	88.913418(29)	2.03(7) h	β+	89Zr	(9/2+)

89mNb	0(30)# keV	1.10(3) h	β+	89Zr	(1/2)−

90Nb	41	49	89.911265(5)	14.60(5) h	β+	90Zr	8+

90m1Nb	122.370(22) keV	63(2) µs	6+

90m2Nb	124.67(25) keV	18.81(6) s	IT	90Nb	4-

90m3Nb	171.10(10) keV	<1 µs	7+

90m4Nb	382.01(25) keV	6.19(8) ms	1+

90m5Nb	1880.21(20) keV	472(13) ns	(11−)

91Nb	41	50	90.906996(4)	680(130) a	EC (99.98%)	91Zr	9/2+

β+ (.013%)	91Zr

91m1Nb	104.60(5) keV	60.86(22) d	IT (93%)	91Nb	1/2−

EC (7%)	91Zr

β+ (.0028%)	91Zr

91m2Nb	2034.35(19) keV	3.76(12) µs	(17/2−)

92Nb	41	51	91.907194(3)	3.47(24)×107 a	β+ (99.95%)	92Zr	(7)+

β− (.05%)	92Mo

92m1Nb	135.5(4) keV	10.15(2) d	β+	92Zr	(2)+

92m2Nb	225.7(4) keV	5.9(2) µs	(2)−

92m3Nb	2203.3(4) keV	167(4) ns	(11−)

93Nb	41	52	92.9063781(26)	Stable	9/2+	1.0000

93mNb	30.77(2) keV	16.13(14) a	IT	93Nb	1/2−

94Nb	41	53	93.9072839(26)	2.03(16)×104 a	β−	94Mo	(6)+

94mNb	40.902(12) keV	6.263(4) min	IT (99.5%)	94Nb	3+

β− (.5%)	94Mo

95Nb	41	54	94.9068358(21)	34.991(6) d	β−	95Mo	9/2+

95mNb	235.690(20) keV	3.61(3) d	IT (94.4%)	95Nb	1/2−

β− (5.6%)	95Mo

96Nb	41	55	95.908101(4)	23.35(5) h	β−	96Mo	6+

97Nb	41	56	96.9080986(27)	72.1(7) min	β−	97Mo	9/2+

97mNb	743.35(3) keV	52.7(18) s	IT	97Nb	1/2−

98Nb	41	57	97.910328(6)	2.86(6) s	β−	98Mo	1+

98mNb	84(4) keV	51.3(4) min	β− (99.9%)	98Mo	(5+)

IT (.1%)	98Nb

99Nb	41	58	98.911618(14)	15.0(2) s	β−	99Mo	9/2+

99mNb	365.29(14) keV	2.6(2) min	β− (96.2%)	99Mo	1/2−

IT (3.8%)	99Nb

100Nb	41	59	99.914182(28)	1.5(2) s	β−	100Mo	1+

100mNb	470(40) keV	2.99(11) s	β−	100Mo	(4+,5+)

101Nb	41	60	100.915252(20)	7.1(3) s	β−	101Mo	(5/2#)+

102Nb	41	61	101.91804(4)	1.3(2) s	β−	102Mo	1+

102mNb	130(50) keV	4.3(4) s	β−	102Mo	high

103Nb	41	62	102.91914(7)	1.5(2) s	β−	103Mo	(5/2+)

104Nb	41	63	103.92246(11)	4.9(3) s	β− (99.94%)	104Mo	(1+)

β−, n (.06%)	103Mo

104mNb	220(120) keV	940(40) ms	β− (99.95%)	104Mo	high

β−, n (.05%)	103Mo

105Nb	41	64	104.92394(11)	2.95(6) s	β− (98.3%)	105Mo	(5/2+)#

β−, n (1.7%)	104Mo

106Nb	41	65	105.92797(21)#	920(40) ms	β− (95.5%)	106Mo	2+#

β−, n (4.5%)	105Mo

107Nb	41	66	106.93031(43)#	300(9) ms	β− (94%)	107Mo	5/2+#

β−, n (6%)	106Mo

108Nb	41	67	107.93484(32)#	0.193(17) s	β− (93.8%)	108Mo	(2+)

β−, n (6.2%)	107Mo

109Nb	41	68	108.93763(54)#	190(30) ms	β− (69%)	109Mo	5/2+#

β−, n (69%)	108Mo

110Nb	41	69	109.94244(54)#	170(20) ms	β− (60%)	110Mo	2+#

β−, n (40%)	109Mo

111Nb	41	70	110.94565(54)#	80# ms [>300 ns]	5/2+#

112Nb	41	71	111.95083(75)#	60# ms [>300 ns]	2+#

113Nb	41	72	112.95470(86)#	30# ms [>300 ns]	5/2+#

Sentence(s)

The meta state of ⁹³Nb has a half-life of 16.13 years.

final_sentence: The meta state of ⁹³Nb has a half-life of 16.13 years.