Eu - Europium

Discovered by Demarçay in 1901. Apparently, it was named after Europe.

Atomic number - 63 Density g/mL 5 .26

Atomic weight u 151 .96 Melting point K 1090

Bonding radius A 1 .85 Boiling point K 1870

Atomic radius A 2 .56 Heat of vaporization kJ/mol 143 .5

Ionization Potential V 5 .67 Heat of fusion kJ/mol 9 .21

Electronegativity - 1 .2 Specific heat J/gK 0 .18

The oxide is mildly basic.
Crystal are body centered cubic.

Electron config. : [Xe] 4f⁷ 6s²

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

H He

Li Be B C N O F Ne

Na Mg Al Si P S Cl Ar

K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr

Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe

Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn

Fr Ra Ac** Rf Db Sg Bh Hs Mt 110 111 112 113

Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

Actinides ** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

Atomic number	-	63		Density	g/mL	5	.26
Atomic weight	u	151	.96	Melting point	K	1090
Bonding radius	A	1	.85	Boiling point	K	1870
Atomic radius	A	2	.56	Heat of vaporization	kJ/mol	143	.5
Ionization Potential	V	5	.67	Heat of fusion	kJ/mol	9	.21
Electronegativity	-	1	.2	Specific heat	J/gK	0	.18
The oxide is mildly basic.				Crystal are body centered cubic.
Electron config. : [Xe] 4f⁷ 6s²