Isotopes of Niobium - Table

Table

nuclide
symbol		 Z(p) N(n)
isotopic mass (u)
 half-life decay
mode(s)		 daughter
isotope(s)		 nuclear
spin		 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 5/2+#
112Nb 41 71 111.95083(75)# 60# ms 2+#
113Nb 41 72 112.95470(86)# 30# ms 5/2+#

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