Cerium Element (Periodic Table)

Cerium

Cerium (Ce) is a chemical element of the periodic table, located in the period 6, and has the atomic number 58. It is the second element in the lanthanide series. It is a soft, ductile, silvery-white metal, which is named after the dwarf planet “Ceres”. It is the most abundant element, 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 Cerium Element

Cerium
‣ What does cerium look like?

Appearance: silvery white
‣ Who discovered cerium? When was the element cerium discovered?

Discovery: Martin Heinrich Klaproth, Jons Jacob Berzelius, Wilhelm Hisinger (1803)
First isolation: Carl Gustaf Mosander (1838)
‣ Where is cerium located on the periodic table?

Cerium Periodic Table

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

Atomic number (Z): 58
‣ What symbol represents cerium?

Symbol: Ce
Cerium atomic weight: 140.116
‣ What block does cerium belong to?

Block: f-block
‣ What period is cerium on the periodic table?

Period: 6
Cerium atomic radius: empirical: 181.8 pm
Cerium covalent radius: 204±9 pm
Cerium Van der Waals radius: 182 pm
‣ What is the melting point of cerium?

Melting point: 1068 K (795 °C, 1463 °F)
Cerium boiling point: 3716 K (3443 °C, 6229 °F)
‣ How many electrons does cerium have?

Electrons per shell: 2, 8, 18, 19, 9, 2
‣ What is the electron configuration for cerium?

Electron configuration: [Xe] 4f1 5d1 6s2
Cerium ionization energies:
1st: 534.4 kJ/mol
2nd: 1050 kJ/mol
3rd: 1949 kJ/mol
‣ What is the phase of cerium?

Phase (at r.t): solid
Cerium density (near r.t): 6.770 g/cm3
when liquid (at m.p): 6.55 g/cm3
Cerium magnetic ordering: paramagnetic
Cerium natural occurrence: primordial
Oxidation state of cerium: +3, +4
‣ What’s the electronegativity of cerium?

Electronegativity: Pauling scale: 1.12
Cerium poisson’s ratio: γ form: 0.24
Cerium heat of fusion: 5.46 kJ/mol
Cerium heat of vaporization: 398 kJ/mol
Cerium molar heat capacity: 26.94 J/(mol K)
Cerium molar magnetic susceptibility: (β) +2450.0 × 10-6 cm3/mol (293 K)
Speed of sound in cerium: 2100 m/s (at 20 °C)
‣ What is the crystal structure of cerium?

Crystal structure: double hexagonal close-packed (dhcp) β-Ce
Crystal structure: face centered cubic (fcc) γ-Ce
Thermal expansion of cerium: γ, poly: 6.3 µm/(m.K) (at r.t)
Thermal conductivity of cerium: 11.3 W/(m.K)
Cerium electrical resistivity: β, poly: 828 nΩ.m (at r.t)
‣ Cerium hardness

Mohs hardness: 2.5
Vickers hardness: 210-470 MPa
Brinell hardness: 186-412 MPa
Young’s modulus of cerium: γ form: 33.6 GPa
Shear modulus of cerium: γ form: 13.5 GPa
Bulk modulus of cerium: γ form: 21.5 GPa
Cerium CAS number: 7440-45-1

‣ Cerium vapor pressure

Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)199221942442275431593705

‣ How many isotopes does cerium have?

Main isotopes of cerium
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
134Cesyn3.16 dε134La
136Ce0.186 %stable
138Ce0.251 %stable
139Cesyn137.640 dε139La
140Ce88.449 %stable
141Cesyn32.501 dβ141Pr
142Ce11.114 %stable
143Cesyn33.039 hβ143Pr
144Cesyn284.893 dβ144Pr

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