铌的同位素

铌（原子量：92.90637(1)）共有58个同位素，其中有1个同位素是稳定的。

主要的铌同位素

同位素 衰变 丰度 半衰期 (t1/2) 方式 能量 （MeV） 产物 91Nb 人造 680 年 ε 1.258 91Zr β+ 0.236 91Zr 92Nb 痕量 3.47×107 年 β+ 0.984 92Zr β− 0.355 92Mo 93Nb 100% 稳定，带52粒中子 93mNb 人造 16.12 年 IT 0.031 93Nb 94Nb 痕量 2.04×104 年 β− 2.045 94Mo 95Nb 人造 34.991 天 β− 0.926 95Mo
标准原子质量（英语：Standard atomic weight） (Ar, 标准)	7001929063700000000♠92.90637(1)[1]
←Zr（40） Mo（42）→
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图表

符号	Z	N	同位素质量（u） [n 1][n 2]	半衰期 [n 1][n 2]	衰变 方式[2]	衰变 产物 [n 3][n 4]	原子核 自旋[n 1]	相对丰度 （莫耳分率）[n 2]
	激发能量[n 1][n 2]
81 Nb	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	ε (99.98%)	91Zr	9/2+
					β+ (.013%)	91Zr
91m1Nb	104.60(5) keV			60.86(22) d	IT (93%)	91Nb	1/2-
					ε (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-)
93 Nb	41	52	92.9063781(26)	稳定			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+#
114Nb[3]	41	73
115Nb[3]	41	74
116Nb[4]	41	75
117Nb[5]	41	76

1. 画上#号的数据代表没有经过实验的证明，仅为理论推测。
2. 用括号括起来的数据代表不确定性。
3. 稳定的衰变产物以粗体表示。
4. 半衰期超过5亿年的衰变产物以粗斜体表示。

←	同位素列表	→
锆的同位素	铌的同位素	钼的同位素

参考文献

1. Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. Standard atomic weights of the elements 2021 (IUPAC Technical Report). Pure and Applied Chemistry. 2022-05-04. ISSN 1365-3075. doi:10.1515/pac-2019-0603 （英语）.
2. 存档副本. [2015-09-15]. （原始内容存档于2017-02-19）.
3. Ohnishi, Tetsuya; Kubo, Toshiyuki; Kusaka, Kensuke; et al. Identification of 45 New Neutron-Rich Isotopes Produced by In-Flight Fission of a ²³⁸U Beam at 345 MeV/nucleon. J. Phys. Soc. Jpn. (Physical Society of Japan). 2010, 79 (7): 073201. Bibcode:2010JPSJ...79g3201T. arXiv:1006.0305 . doi:10.1143/JPSJ.79.073201 .
4. Shimizu, Yohei; et al. Observation of New Neutron-rich Isotopes among Fission Fragments from In-flight Fission of 345MeV=nucleon 238U: Search for New Isotopes Conducted Concurrently with Decay Measurement Campaigns. Journal of the Physical Society of Japan. 2018, 87 (1): 014203. Bibcode:2018JPSJ...87a4203S. doi:10.7566/JPSJ.87.014203 .
5. Sumikama, T.; et al. Observation of new neutron-rich isotopes in the vicinity of Zr110. Physical Review C. 2021, 103 (1): 014614 [2023-11-14]. Bibcode:2021PhRvC.103a4614S. S2CID 234019083. doi:10.1103/PhysRevC.103.014614. hdl:10261/260248 . （原始内容存档于2022-03-05）.

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• Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
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