Isotopes of copper
List of isotopes
Abbreviations: IT: Isomeric transition Bold for stable isotopes

Isotopes of copper

Section Title: List of isotopes
Table Section Text: Abbreviations: IT: Isomeric transition Bold for stable isotopes

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

52Cu	29	23	51.99718(28)#	p	51Ni	(3+)#

53Cu	29	24	52.98555(28)#	<300 ns	p	52Ni	(3/2−)#

54Cu	29	25	53.97671(23)#	<75 ns	p	53Ni	(3+)#

55Cu	29	26	54.96605(32)#	40# ms [>200 ns]	β+	55Ni	3/2−#

p	54Ni

56Cu	29	27	55.95856(15)#	93(3) ms	β+	56Ni	(4+)

57Cu	29	28	56.949211(17)	196.3(7) ms	β+	57Ni	3/2−

58Cu	29	29	57.9445385(17)	3.204(7) s	β+	58Ni	1+

59Cu	29	30	58.9394980(8)	81.5(5) s	β+	59Ni	3/2−

60Cu	29	31	59.9373650(18)	23.7(4) min	β+	60Ni	2+

61Cu	29	32	60.9334578(11)	3.333(5) h	β+	61Ni	3/2−

62Cu	29	33	61.932584(4)	9.673(8) min	β+	62Ni	1+

63Cu	29	34	62.9295975(6)	Stable	3/2−	0.6915(15)	0.68983–0.69338

64Cu	29	35	63.9297642(6)	12.700(2) h	β+ (61%)	64Ni	1+

β− (39%)	64Zn

65Cu	29	36	64.9277895(7)	Stable	3/2−	0.3085(15)	0.30662–0.31017

66Cu	29	37	65.9288688(7)	5.120(14) min	β−	66Zn	1+

67Cu	29	38	66.9277303(13)	61.83(12) h	β−	67Zn	3/2−

68Cu	29	39	67.9296109(17)	31.1(15) s	β−	68Zn	1+

68mCu	721.6(7) keV	3.75(5) min	IT (84%)	68Cu	(6-)

β− (16%)	68Zn

69Cu	29	40	68.9294293(15)	2.85(15) min	β−	69Zn	3/2−

69mCu	2741.8(10) keV	360(30) ns	(13/2+)

70Cu	29	41	69.9323923(17)	44.5(2) s	β−	70Zn	(6-)

70m1Cu	101.1(3) keV	33(2) s	β−	70Zn	(3-)

70m2Cu	242.6(5) keV	6.6(2) s	1+

71Cu	29	42	70.9326768(16)	19.4(14) s	β−	71Zn	(3/2−)

71mCu	2756(10) keV	271(13) ns	(19/2−)

72Cu	29	43	71.9358203(15)	6.6(1) s	β−	72Zn	(1+)

72mCu	270(3) keV	1.76(3) µs	(4-)

73Cu	29	44	72.936675(4)	4.2(3) s	β− (>99.9%)	73Zn	(3/2−)

β−, n (<.1%)	72Zn

74Cu	29	45	73.939875(7)	1.594(10) s	β−	74Zn	(1+,3+)

75Cu	29	46	74.94190(105)	1.224(3) s	β− (96.5%)	75Zn	(3/2−)#

β−, n (3.5%)	74Zn

76Cu	29	47	75.945275(7)	641(6) ms	β− (97%)	76Zn	(3,5)

β−, n (3%)	75Zn

76mCu	0(200)# keV	1.27(30) s	β−	76Zn	(1,3)

77Cu	29	48	76.94785(43)#	469(8) ms	β−	77Zn	3/2−#

78Cu	29	49	77.95196(43)#	342(11) ms	β−	78Zn

79Cu	29	50	78.95456(54)#	188(25) ms	β−, n (55%)	78Zn	3/2−#

β− (45%)	79Zn

80Cu	29	51	79.96087(64)#	100# ms [>300 ns]	β−	80Zn

Sentence(s)

⁶⁷Cu has a half-life of 61.83 hours.

final_sentence: ⁶⁷Cu has a half-life of 61.83 hours.