镉的同位素

**主要的镉同位素**
IT	113Cd
标准原子质量 (Ar, 标准)	112.414(4);
←Ag（47）	In（49）→
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镉（原子量：112.411(8)）共有50个同位素，其中有3个同位素是稳定的。

图表

符号	Z（p ）	N（n ）	同位素质量（u）	半衰期^{[n 1]}	衰变方式^[2]^{[n 2]}	衰变产物^{[n 3]}	原子核自旋	相对丰度（莫耳分率）	相对丰度的变化量（莫耳分率）
符号	激发能量			半衰期^{[n 1]}	衰变方式^[2]^{[n 2]}	衰变产物^{[n 3]}	原子核自旋	相对丰度（莫耳分率）	相对丰度的变化量（莫耳分率）
⁹⁵Cd^[3]^[4]	48	47	94.94987(64)#	5# ms			9/2+#
⁹⁶Cd^[3]^[4]	48	48	95.93977(54)#	1# s	β⁺	⁹⁶Ag	0+
⁹⁷Cd^[3]^[4]^[5]	48	49	96.93494(43)#	2.8(6) s	β⁺ (>99.9%)	⁹⁷Ag	9/2+#
⁹⁷Cd^[3]^[4]^[5]	48	49	96.93494(43)#	2.8(6) s	β⁺, p (<.1%)	⁹⁶Pd	9/2+#
⁹⁸Cd	48	50	97.92740(8)	9.2(3) s	β⁺ (99.975%)	⁹⁸Ag	0+
⁹⁸Cd	48	50	97.92740(8)	9.2(3) s	β⁺, p (.025%)	⁹⁷Ag	0+
^98mCd	2427.5(6) keV			190(20) ns			8+#
⁹⁹Cd	48	51	98.92501(22)#	16(3) s	β⁺ (99.78%)	⁹⁹Ag	(5/2+)
					β⁺, p (.21%)	⁹⁸Pd
					β⁺, α (10⁻⁴%)	⁹⁴Rh
¹⁰⁰Cd	48	52	99.92029(10)	49.1(5) s	β⁺	¹⁰⁰Ag	0+
¹⁰¹Cd	48	53	100.91868(16)	1.36(5) min	β⁺	¹⁰¹Ag	(5/2+)
¹⁰²Cd	48	54	101.91446(3)	5.5(5) min	β⁺	¹⁰²Ag	0+
¹⁰³Cd	48	55	102.913419(17)	7.3(1) min	β⁺	¹⁰³Ag	5/2+
¹⁰⁴Cd	48	56	103.909849(10)	57.7(10) min	β⁺	¹⁰⁴Ag	0+
¹⁰⁵Cd	48	57	104.909468(12)	55.5(4) min	β⁺	¹⁰⁵Ag	5/2+
¹⁰⁶Cd	48	58	105.906459(6)	观测上稳定^{[n 4]}			0+	0.0125(6)
¹⁰⁷Cd	48	59	106.906618(6)	6.50(2) h	β⁺	^107mAg	5/2+
¹⁰⁸Cd	48	60	107.904184(6)	观测上稳定^{[n 5]}			0+	0.0089(3)
¹⁰⁹Cd	48	61	108.904982(4)	461.4(12) d	ε	¹⁰⁹Ag	5/2+
^109m1Cd	59.6(4) keV			12(2) µs			1/2+
^109m2Cd	463.0(5) keV			10.9(5) µs			11/2-
¹¹⁰Cd	48	62	109.9030021(29)	稳定^{[n 6]}			0+	0.1249(18)
¹¹¹Cd^{[n 7]}	48	63	110.9041781(29)	稳定^{[n 6]}			1/2+	0.1280(12)
^111mCd	396.214(21) keV			48.50(9) min	IT	¹¹¹Cd	11/2-
¹¹²Cd^{[n 7]}	48	64	111.9027578(29)	稳定^{[n 6]}			0+	0.2413(21)
¹¹³Cd^{[n 7]}^{[n 8]}	48	65	112.9044017(29)	7.7(3)×10¹⁵ a	β⁻	¹¹³In	1/2+	0.1222(12)
^113mCd^{[n 7]}	263.54(3) keV			14.1(5) a	β⁻ (99.86%)	¹¹³In	11/2-
^113mCd^{[n 7]}	263.54(3) keV			14.1(5) a	IT (.139%)	¹¹³Cd	11/2-
¹¹⁴Cd^{[n 7]}	48	66	113.9033585(29)	观测上稳定^{[n 9]}			0+	0.2873(42)
¹¹⁵Cd^{[n 7]}	48	67	114.9054310(29)	53.46(5) h	β⁻	^115mIn	1/2+
^115mCd	181.0(5) keV			44.56(24) d	β⁻	^115mIn	(11/2)-
¹¹⁶Cd^{[n 7]}^{[n 8]}	48	68	115.904756(3)	3.1(4)×10¹⁹ a	β⁻β⁻	¹¹⁶Sn	0+	0.0749(18)
¹¹⁷Cd	48	69	116.907219(4)	2.49(4) h	β⁻	^117mIn	1/2+
^117mCd	136.4(2) keV			3.36(5) h	β⁻	^117mIn	(11/2)-
¹¹⁸Cd	48	70	117.906915(22)	50.3(2) min	β⁻	¹¹⁸In	0+
¹¹⁹Cd	48	71	118.90992(9)	2.69(2) min	β⁻	^119mIn	(3/2+)
^119mCd	146.54(11) keV			2.20(2) min	β⁻	^119mIn	(11/2-)#
¹²⁰Cd	48	72	119.90985(2)	50.80(21) s	β⁻	¹²⁰In	0+
¹²¹Cd	48	73	120.91298(9)	13.5(3) s	β⁻	^121mIn	(3/2+)
^121mCd	214.86(15) keV			8.3(8) s	β⁻	^121mIn	(11/2-)
¹²²Cd	48	74	121.91333(5)	5.24(3) s	β⁻	¹²²In	0+
¹²³Cd	48	75	122.91700(4)	2.10(2) s	β⁻	^123mIn	(3/2)+
^123mCd	316.52(23) keV			1.82(3) s	β⁻	¹²³In	(11/2-)
^123mCd	316.52(23) keV			1.82(3) s	IT	²³Cd	(11/2-)
¹²⁴Cd	48	76	123.91765(7)	1.25(2) s	β⁻	¹²⁴In	0+
¹²⁵Cd	48	77	124.92125(7)	0.65(2) s	β⁻	^125mIn	(3/2+)#
^125mCd	50(70) keV			570(90) ms	β⁻	¹²⁵In	11/2-#
¹²⁶Cd	48	78	125.92235(6)	0.515(17) s	β⁻	¹²⁶In	0+
¹²⁷Cd	48	79	126.92644(8)	0.37(7) s	β⁻	^127mIn	(3/2+)
¹²⁸Cd	48	80	127.92776(32)	0.28(4) s	β⁻	¹²⁸In	0+
¹²⁹Cd	48	81	128.93215(32)#	242(8) ms	β⁻ (>99.9%)	¹²⁹In	3/2+#
¹²⁹Cd	48	81	128.93215(32)#	242(8) ms	IT (<.1%)	¹²⁹Cd	3/2+#
^129mCd	0(200)# keV			104(6) ms			11/2-#
¹³⁰Cd	48	82	129.9339(3)	162(7) ms	β⁻ (96%)	¹³⁰In	0+
¹³⁰Cd	48	82	129.9339(3)	162(7) ms	β⁻, n (4%)	¹²⁹In	0+
¹³¹Cd	48	83	130.94067(32)#	68(3) ms			7/2-#
¹³²Cd	48	84	131.94555(54)#	97(10) ms			0+

备注：画上#号的数据代表没有经过实验的证明，只是理论推测而已，而用括号括起来的代表数据不确定性。

←	同位素列表	→
[[{{{前一个}}}]]	{{{这一个}}}	[[{{{下一个}}}]]

注释

↑ Bold for isotopes with half-lives longer than the age of the universe (nearly stable)
↑ Abbreviations:
ε: 电子俘获
 IT: Isomeric transition
↑ Bold for stable isotopes, bold italics for nearly-stable isotopes (half-life longer than the age of the universe)
↑ Believed to decay by β⁺β⁺ to ¹⁰⁶Pd with a half-life over 4.1×10²⁰ years
↑ Believed to decay by β⁺β⁺ to ¹⁰⁸Pd with a half-life over 4.1×10¹⁷ years
↑ ^6.0 ^6.1 ^6.2 Theoretically capable of spontaneous fission
↑ ^7.0 ^7.1 ^7.2 ^7.3 ^7.4 ^7.5 ^7.6 Fission product
↑ ^8.0 ^8.1 Primordial radionuclide
↑ Believed to undergo β⁻β⁻ decay to ¹¹⁴Sn with a half-life over 6.4×10¹⁸ years

参考文献

↑ Meija, Juris; et al. Atomic weights of the elements 2013 (IUPAC Technical Report). Pure and Applied Chemistry. 2016, 88 (3): 265–91. doi:10.1515/pac-2015-0305.
↑ Nucleonica
↑ ^3.0 ^3.1 ^3.2 G. Audi, O. Bersillon, J. Blachot, A.H. Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).
↑ ^4.0 ^4.1 ^4.2 National Nuclear Data Center, Brookhaven National Laboratory, information extracted from the NuDat 2.1 database. (Retrieved Sept. 2005, from the code of the popup boxes).
↑ David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.

Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683–800, (2003) and Atomic Weights Revised (2005).
Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
- Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3–128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
- David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.

[2] Bold for isotopes with half-lives longer than the age of the universe (nearly stable)

[4] Abbreviations:
ε: 电子俘获
IT: Isomeric transition

[5] Bold for stable isotopes, bold italics for nearly-stable isotopes (half-life longer than the age of the universe)

[9] Believed to decay by β⁺β⁺ to ¹⁰⁶Pd with a half-life over 4.1×10²⁰ years

[10] Believed to decay by β⁺β⁺ to ¹⁰⁸Pd with a half-life over 4.1×10¹⁷ years

[SF-11] 6.0 ^6.1 ^6.2 Theoretically capable of spontaneous fission

[FP-12] 7.0 ^7.1 ^7.2 ^7.3 ^7.4 ^7.5 ^7.6 Fission product

[PN-13] 8.0 ^8.1 Primordial radionuclide

[14] Believed to undergo β⁻β⁻ decay to ¹¹⁴Sn with a half-life over 6.4×10¹⁸ years

[CIAAW2013-1] Meija, Juris; et al. Atomic weights of the elements 2013 (IUPAC Technical Report). Pure and Applied Chemistry. 2016, 88 (3): 265–91. doi:10.1515/pac-2015-0305.

[3] Nucleonica

[A-6] 3.0 ^3.1 ^3.2 G. Audi, O. Bersillon, J. Blachot, A.H. Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).

[B-7] 4.0 ^4.1 ^4.2 National Nuclear Data Center, Brookhaven National Laboratory, information extracted from the NuDat 2.1 database. (Retrieved Sept. 2005, from the code of the popup boxes).

[C-8] David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.

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