Discovery	1841 Peligot
Abundance	2.7
Radius	0
Electronegativity	1.38
Ionization	6.1941
Number of isotopes	15
Electronic configuration	[Rn] 5f3 6d1 7s2
Oxidation states	3,4,5,6
Electron by energy level	2,8,18,32,21,9,2

Minerals containing this element : 302

Mineral	Hardness	Density
Abernathyite	2.00 / 3.00	3.31
Adolfpateraite	2.00 / 2.00	4.24
Agricolaite	4.00 / 4.00	3.53
Agrinierite		5.62
Albrechtschraufite	2.00 / 3.00	2.60
Althupite	3.50 / 4.00	3.90
Alwilkinsite-(Y)	2.00 / 2.50	3.37
Andersonite	2.50 / 2.50	2.79
Arapovite	5.50 / 6.00	3.43
Arsenovanmeersscheite
Arsenuranospathite	2.00 / 2.00	2.54
Arsenuranylite	2.50 / 2.50	4.25
Asselbornite	3.00 / 3.00
Astrocyanite-(Ce)	2.00 / 3.00	3.80
Autunite	2.00 / 2.50	3.10
Bassetite	2.50 / 2.50	3.63
Bauranoite	5.00 / 5.00	5.28
Bayleyite		2.05
Becquerelite	2.50 / 2.50	5.14
Behounekite
Belakovskiite
Bergenite	2.00 / 3.00	4.10
Beshtauite	2.00 / 2.00	3.05
Bijvoetite-(Y)	2.00 / 2.00	3.90
Billietite		5.27
Bismutopyrochlore	5.00 / 5.00	4.97
Blatonite	2.00 / 3.00	3.99
Bluelizardite	2.00 / 2.00	3.12
Bobcookite	2.50 / 2.50	2.67
Boltwoodite	3.50 / 4.00	3.60
Brannerite	4.00 / 5.00	4.50
Braunerite
Calciobetafite	4.50 / 5.50	4.20
Calciouranoite	4.00 / 4.00	4.62
Calcioursilite
Calcurmolite
Carlosbarbosaite		4.00
Carnotite	2.00 / 2.00	3.70
Cejkaite		3.67
Chadwickite	2.00 / 2.00	4.86
Chernikovite	2.00 / 2.50
Chistyakovaite	2.50 / 2.50	3.62
Ciprianiite
Clarkeite	4.00 / 4.50	6.39
Cleusonite	6.00 / 7.00	4.74
Cliffordite	4.00 / 4.00	6.57
Cobaltzippeite	5.00 / 5.50	4.30
Coconinoite	1.00 / 2.00	2.70
Coffinite	5.00 / 6.00	5.10
Compreignacite		5.03
Cousinite
Coutinhoite	1.50 / 1.50
Crichtonite	5.00 / 6.00	4.46
Cuprosklodowskite	4.00 / 4.00	3.80
Curienite	3.00 / 3.00	4.88
Curite	4.00 / 5.00	7.19
Davidite-(Ce)	6.00 / 6.00	4.42
Davidite-(La)	6.00 / 6.00	4.42
Davidite-(Y)
Deliensite	2.00 / 2.00	3.27
Deloryite	4.00 / 4.00	4.90
Demesmaekerite	3.00 / 4.00	5.28
Derriksite		4.72
Dessauite-(Y)	6.50 / 7.00	4.68
Dewindtite	2.50 / 3.00	5.03
Dissakisite-(La)	6.50 / 7.00	3.79
Dumontite	2.00 / 3.00	5.65
Dymkovite
Elbrusite
Euxenite-(Y)	6.50 / 6.50	4.70
Ewingite
Fermiite	2.50 / 2.50	3.31
Fluornatropyrochlore	4.00 / 4.50	5.28
Fontanite	3.00 / 3.00	4.10
Fourmarierite	3.00 / 4.00	5.74
Francevillite	3.00 / 3.00	4.55
Françoisite-(Ce)
Françoisite-(Nd)	3.00 / 3.00	4.06
Fritzscheite	2.00 / 3.00	4.39
Furongite	2.00 / 3.00	2.82
Gauthierite
Geschieberite	2.00 / 2.00	3.26
Gramaccioliite-(Y)	6.00 / 6.00	4.66
Grimselite	2.00 / 2.50	3.30
Guilleminite	2.00 / 2.00	4.88
Haiweeite	3.50 / 3.50	2.86
Hallimondite	2.50 / 3.00	6.39
Haynesite	1.50 / 2.00	4.10
Heinrichite	2.50 / 2.50	3.61
Heisenbergite	2.00 / 2.00	5.14
Holfertite	4.00 / 4.00	4.26
Hügelite	2.50 / 2.50	5.10
Hydroxycalciopyrochlore	5.00 / 6.00	5.15
Ianthinite	2.50 / 3.00	5.16
Iriginite	1.00 / 2.00	3.84
Ishikawaite	5.00 / 6.00	6.20
Iwashiroite-(Y)	6.00 / 6.00	7.10
Jáchymovite		4.79
Ježekite	2.00 / 2.00	2.97