Europium 63

Atomic No. Order:

Alphabetic Order:

2, 8, 18,

25, 8, 2

Eu
63

Am
95

Uqp
145

Uep
195

Europium

Symbol

Atomic Number

Relative Atomic Mass
¹²C = 12.0000

151.964

Atomic Radius pm

204

First Ionisation Energy
kJ mol ^-1

546.7

Electronegativity

n/a

Density kg m ^-3

5243 [293 K]

Molar Volume cm ³

28.98

Thermal Conductivity
W m ^-1 K ^-1

13.9 [300 K]

Melting Point K

1095

Boiling Point K

1870

Number of Isotopes

Inner/outer Shells

Inner/outer Orbitals

Filling Orbital

4f ⁷

Ground State Electron Configuration

[Xe]

4f ⁷

5p ⁶

6s ²

Ground State Electron C onfiguration with free Orbitals (n=23)

0, 0, 0, 7, 10, 6

Ground State Electron C onfiguration with compressed Orbitals (n=96)

0, 0, 0, 0, 32, 64

Singularity

182

	s	p	d	f		g	h	i	j
1	2
2	2	6
3	2	6	10
4	2	6	10	7	7
5	2	6	10	14		18
6	2	6	10	14		18	22
7
8

Term Symbol

⁸S _7/2

Discovery

Discovered by E.A. Demarcay (Paris, France) in 1901

Name Derived From

Named after Europe

APSIDIUM ©	Created:		2002-08-01		063.pdf
	Page update:		2004-12-21		063.pdf