Europium Element (Periodic Table)

Europium

Europium (Eu) is a chemical element of the periodic table, located in the period 6, and has the atomic number 63. It is the seventh element in the lanthanide series. It is a soft, silvery-white metal, which is named after Europe. It is the softest and the most reactive element in the lanthanide series and is counted as one of the rare earth elements.

group
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
period
1
1
H
2
He
2
3
Li
4
Be
5
B
6
C
7
N
8
O
9
F
10
Ne
3
11
Na
12
Mg
13
Al
14
Si
15
P
16
S
17
Cl
18
Ar
4
19
K
20
Ca
21
Sc
22
Ti
23
V
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
5
37
Rb
38
Sr
39
Y
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
I
54
Xe
6
55
Cs
56
Ba
72
Hf
73
Ta
74
W
75
Re
76
Os
77
Ir
78
Pt
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
7
87
Fr
88
Ra
104
Rf
105
Db
106
Sg
107
Bh
108
Hs
109
Mt
110
Ds
111
Rg
112
Cn
113
Nh
114
Fl
115
Mc
116
Lv
117
Ts
118
Og
57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Tb
66
Dy
67
Ho
68
Er
69
Tm
70
Yb
71
Lu
89
Ac
90
Th
91
Pa
92
U
93
Np
94
Pu
95
Am
96
Cm
97
Bk
98
Cf
99
Es
100
Fm
101
Md
102
No
103
Lr
– f block

FAQs on Europium Element

Europium
‣ What does europium look like?

Appearance: silvery white, with a pale yellow tint; but rarely seen without oxide discoloration
‣ Who discovered europium? When was the element europium discovered?

Discovery and first isolation: Eugene-Anatole Demarcay (1896, 1901)
‣ Where is europium found on the periodic table?

Europium Periodic Table

Location: Europium is found in the sixth row of the periodic table, next to the samarium element.
‣ What’s the atomic mass number for europium?

Atomic number (Z): 63
Europium symbol: Eu
‣ Correct atomic weight of europium

Standard atomic weight: 151.964
‣ Which block does europium belong to?

Block: f-block
‣ What period is europium in the periodic table?

Period: 6
‣ What is the atomic radius of europium?

Atomic radius: empirical: 180 pm
Europium covalent radius: 198±6 pm
‣ What is europium melting point?

Melting point: 1099 K (826 °C, 1519 °F)
‣ What is europium boiling point?

Boiling point: 1802 K (1529 °C, 2784 °F)
‣ How many electron shells does europium have?

Electrons per shell: 2, 8, 18, 25, 8, 2
‣ What is the electron configuration of europium?

Electron configuration: [Xe] 4f7 6s2
Europium ionization energies:
1st: 547.1 kJ/mol
2nd: 1085 kJ/mol
3rd: 2404 kJ/mol
‣ What is the phase of europium?

Phase (at r.t): solid
Europium density (near r.t): 5.264 g/cm3
when liquid (at m.p): 5.13 g/cm3
Europium magnetic ordering: paramagnetic
Europium natural occurrence: primordial
Oxidation state of europium: +2, +3
‣ What’s the electronegativity of europium?

Electronegativity: Pauling scale: 1.2
Europium poisson’s ratio: 0.152
Europium heat of fusion: 9.21 kJ/mol
Europium heat of vaporization: 176 kJ/mol
Europium molar heat capacity: 27.66 J/(mol K)
Europium molar magnetic susceptibility: +34000.0 × 10-6 cm3/mol
Europium crystal structure: body-centered cubic (bcc)
Thermal expansion of europium: poly: 35.0 µm/(m.K) (at r.t)
Thermal conductivity of europium: est. 13.9 W/(m.K)
Europium electrical resistivity: poly: 0.900 µΩ.m (at r.t)
‣ Europium hardness

Vickers hardness: 165-200 MPa
Young’s modulus of europium: 18.2 GPa
Shear modulus of europium: 7.9 GPa
Bulk modulus of europium: 8.3 GPa
Europium CAS number: 7440-53-1

‣ Europium vapor pressure

Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)8639571072123414521796

‣ How many isotopes does europium have?

Main isotopes of europium
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
150Eusyn36.9 yε150Sm
151Eu47.8 %5 × 1018 yα147Pm
152Eusyn13.54 yε
β
152Sm
152Gd
153Eu52.2 %stable
154Eusyn8.59 yβ154Gd
155Eusyn4.76 yβ155Gd

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