Discovery	1879 Boisbaudran
Abundance	7.05
Radius	2.6
Electronegativity	1.17
Ionization	5.6437
Number of isotopes	17
Electronic configuration	[Xe] 4f6 6s2
Oxidation states	2,3
Electron by energy level	2,8,18,24,8,2

Minerals containing this element : 40

Mineral	Hardness	Density	Formula
	3.00 / 3.00	3.72	Cu²⁺₆Ce(AsO₄)₃(OH)₆Â·3H₂O
	5.00 / 5.00	4.68	(Ce,Ca)₉Al(SiO₄)₃(SiO₃OH)₄(OH)₃
	5.50 / 6.00	3.43	(K_1-x_x)(Ca,Na)₂U⁴⁺Si₈O₂₀ (x~0.5)
	2.00 / 3.00	3.80	Cu₂Ce₂(UO₂)(CO₃)₅(OH)₂Â·1.5H₂O
	5.00 / 5.00	4.76	Ce₂Fe²⁺Si₂O₇(CO₃)
		3.00	(Na,H₂O)₆(Ce,REE)₃Be₅MnSi₉(O,OH)₃₀F₄
	5.00 / 5.00	4.70	(La,Ce,Ca)₉(Fe³⁺,Ca,Mg)(SiO₄)₃(SiO₃OH)₄(OH)₃
	3.50 / 4.00	2.42	Ca₃NdAl₂SO₄F₁₃Â·12H₂O
	4.00 / 4.00	3.64	Y₄Cu(CO₃)₄Cl(OH)₅Â·2H₂O
	6.50 / 7.00	3.79	CaLaMgAl₂(Si₂O₇)(SiO₄)O(OH)
	5.00 / 5.00	3.68	Na₂Ba₆Ce₂Fe²⁺Ti₃Si₁₂O₃₆(OH)₁₀Â·nH₂O
	5.50 / 6.00	3.74	SmAl₃(PO₄)₂(OH)₆
	5.00 / 5.00	4.66	(Ce,Ca)₅(SiO₄)₃F
	5.50 / 5.50	4.20	(Ca,REE)₅(SiO₄,PO₄)₃F
	3.00 / 3.00	4.06	Nd(UO₂)₃(PO₄)₂O(OH)Â·6H₂O
	6.00 / 7.00	4.51	(Ca,Ce)₄(Al,Mg,Fe)₄(Si₂O₇)(SiO₄)₃(O,F,OH)₃
	5.00 / 6.00	4.28	BeCe(SiO₄)(OH)
	5.00 / 6.00		BeY(SiO₄)(OH)
	6.00 / 6.00	7.10	YTaO₄
	5.00 / 6.00	3.20	Na₁₂Ce₃Ca₆Mn₃Zr₃WSi₂₅O₇₃(CO₃)(OH)₂
		4.16	LaCO₃(OH)
		4.77	NdCO₃(OH)
	4.50 / 5.50	4.66	Na₂Ce₂Ba₆(PO₄)₆FCl
		2.18	YAl(SO₄)₂(C₂O₄)Â·12H₂O
			Mn²⁺Ce³⁺AlMn³⁺Mn²⁺(Si₂O₇)(SiO₄)O(OH)
		5.51	SmPO₄
	5.00 / 5.00	2.91	Na₂KYSi₆O₁₅
	4.00 / 4.00		(La,Ca,Na,Sr)₆Cu(CO₃)₈
	6.00 / 6.00	5.21	Ce₂Si₂O₇
	5.50 / 6.00		Ca₈Ce₂AlLiSi₆B₈O₃₆(OH)₂
	3.00 / 3.00	3.74	Cu²⁺₆(Pb,La,Nd,Ce,Ca)(AsO₄)₃(OH)₆Â·3H₂O
	3.00 / 4.00		BaCe(CO₃)₂F
	5.00 / 6.00	7.03	YbNbO₄
	3.00 / 4.00	5.20	CuPbNd(CO₃)₃(OH)Â·1.5H₂O
	2.50 / 2.50	3.13	CaNd₂(UO₂)(CO₃)₄(OH)₂Â·6H₂O
	3.00 / 3.00	4.08	Na₂Ce₂TiO₂SiO₄(CO₃)₂
	5.00 / 6.00	4.19	Mn²⁺CeAl₂Fe²⁺(Si₂O₇)(SiO₄)O(OH)
			Mn²⁺CeV³⁺AlMn²⁺O(Si₂O₇)(SiO₄)(OH)
	6.00 / 6.00	4.51	Ce₃CaMg₂Al₂Si₅O₁₉(OH)₂F
	4.00 / 4.00	4.70	LaVO₄