Cf

Californium

Z 98 251.0 g/molActinide Radioactive

Overview Atomic Properties Thermodynamics Electromagnetism Isotopes


²³⁷Cf	139	237.0622	57,940.0	---	800.0 ms	(5/2+)	α²³³Cm(70%) SF(30%) β⁺²³⁷Bk	1995
²³⁸Cf	140	238.0615	57,280.0	---	21.1 ms	0+	SF(97.5%) α²³⁴Cm(2.5%)	1995
²³⁹Cf	141	239.0625	58,200.0	---	28.0 s	(5/2+)	α²³⁵Cm(65%) β⁺²³⁹Bk	1981
²⁴⁰Cf	142	240.0623	57,989.0	---	40.3 s	0+	α²³⁶Cm(98.5%) SF(1.5%) β⁺²⁴⁰Bk	1970
²⁴¹Cf	143	241.0637	59,330.0	---	2.35 m	(7/2-)	α²³⁷Cm(15%) β⁺²⁴¹Bk	1970
²⁴²Cf	144	242.0638	59,387.0	---	3.49 m	0+	α²³⁸Cm(61%) β⁺²⁴²Bk(39%) SF(<0.014%)	1967
²⁴³Cf	145	243.0655	60,990.0	---	10.8 m	(1/2+)	β⁺²⁴³Bk(86%) α²³⁹Cm(14%)	1967
²⁴⁴Cf	146	244.066	61,478.1	---	19.5 m	0+	α²⁴⁰Cm(75%) EC²⁴⁴Bk(25%)	1956
²⁴⁵Cf	147	245.068	63,385.2	---	45.0 m	1/2+	β⁺²⁴⁵Bk(64.7%) α²⁴¹Cm(35.3%)	1956
²⁴⁶Cf	148	246.0688	64,090.2	---	1.49 d	0+	α²⁴²Cm(~100%) SF(2.4e-4%) EC²⁴⁶Bk	1951
²⁴⁷Cf	149	247.071	66,109.0	---	3.11 h	(7/2+)	EC²⁴⁷Bk(99.965%) α²⁴³Cm(0.035%)	1954
²⁴⁸Cf	150	248.0722	67,238.0	---	333.5 d	0+	α²⁴⁴Cm(~100%) SF(0.003%)	1954
²⁴⁹Cf	151	249.0749	69,722.7	---	351.0 y	9/2-	α²⁴⁵Cm(~100%) SF(5e-7%)	1954
^249mCf	151	249.075	69,867.7	---	45.0 µs	5/2+	γ²⁴⁹Cf(100%)	1967
²⁵⁰Cf	152	250.0764	71,170.3	---	13.08 y	0+	α²⁴⁶Cm(99.923%) SF(0.077%)	1954
²⁵¹Cf	153	251.0796	74,135.0	---	898.0 y	1/2+	α²⁴⁷Cm(100%) SF	1954
^251mCf	153	251.08	74,505.0	---	1.3 µs	11/2-	γ²⁵¹Cf(100%)	1971
²⁵²Cf	154	252.0816	76,034.6	---	2.65 y	0+	α²⁴⁸Cm(96.897%) SF(3.103%)	1954
²⁵³Cf	155	253.0851	79,302.0	---	17.81 d	(7/2+)	β⁻²⁵³Es(99.69%) α²⁴⁹Cm(0.31%)	1954
²⁵⁴Cf	156	254.0873	81,341.0	---	60.5 d	0+	SF(99.69%) α²⁵⁰Cm(0.31%) β⁻	1955
²⁵⁵Cf	157	255.091	84,810.0	---	1.42 h	(7/2+)	β⁻²⁵⁵Es(100%) SF α²⁵¹Cm	1981
²⁵⁶Cf	158	256.0934	87,040.0	---	12.3 m	0+	SF(100%) α²⁵²Cm β⁻	1980