Cadmium Element (Periodic Table)

Cadmium

Cadmium (Cd) is a chemical element of the periodic table, located in the group 12 and the period 5, and is having the atomic number 48. It is a soft, lustrous, malleable, silvery-white post transition metal, whose name comes from the Latin word “cadmia”, which means the mineral calamine.

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
– d block

FAQs on Cadmium Element

Cadmium
‣ What does cadmium look like?

Appearance: silvery bluish-gray metallic
‣ Who discovered cadmium? When was cadmium discovered?

Discovery and first isolation: Karl Samuel Leberecht Hermann and Friedrich Stromeyer (1817)
Named by: Friedrich Stromeyer (1817)
‣ What row is cadmium in on the periodic table?

Cadmium Periodic Table

Location: Cadmium is found in the fifth row of the periodic table below the zinc element.
‣ What is cadmium’s atomic number?

Atomic number (Z): 48
‣ What is the symbol for cadmium?

Symbol: Cd
Cadmium atomic weight: 112.414
‣ What block does cadmium belong to?

Block: d-block
‣ What group is cadmium in on the periodic table?

Group: 12
‣ What period is cadmium in on the periodic table?

Period: 5
Cadmium atomic radius: empirical: 151 pm
Cadmium covalent radius: 144±9 pm
Cadmium Van der Waals radius: 158 pm
‣ What is the melting point of cadmium?

Melting point: 594.22 K (321.07 °C, 609.93 °F)
‣ What is the boiling point of cadmium?

Boiling point: 1040 K (767 °C, 1413 °F)
‣ How many electron shells does cadmium have?

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

Electron configuration: [Kr] 4d10 5s2
Cadmium ionization energies:
1st: 867.8 kJ/mol
2nd: 1631.4 kJ/mol
3rd: 3616 kJ/mol
‣ What is the phase of the cadmium?

Phase (at r.t): solid
‣ What is the density of cadmium?

Density (near r.t): 8.65 g/cm3
when liquid (at m.p): 7.996 g/cm3
Cadmium magnetic ordering: diamagnetic
Cadmium natural occurrence: primordial
Cadmium oxidation state: +2
‣ What’s the electronegativity of cadmium?

Electronegativity: Pauling scale: 1.69
Cadmium poisson’s ratio: 0.30
Cadmium heat of fusion: 6.21 kJ/mol
Cadmium heat of vaporization: 99.87 kJ/mol
Cadmium molar heat capacity: 26.020 J/(mol K)
Cadmium molar magnetic susceptibility: -19.8 × 10-6 cm3/mol (298 K)
Speed of sound in cadmium: 2310 m/s (at 20 °C)
Cadmium crystal structure: hexagonal close-packed (hcp)
Thermal expansion of cadmium: 30.8 µm/(m.K) (at 25 °C)
Thermal conductivity of cadmium: 96.6 W/(m.K)
Cadmium electrical resistivity: 72.7 nΩ.m (at 22 °C)
‣ Cadmium hardness

Mohs hardness: 2.0
Brinell hardness: 203-220 MPa
Young’s modulus of cadmium: 50 GPa
Shear modulus of cadmium: 19 GPa
Bulk modulus of cadmium: 42 GPa
Cadmium CAS number: 7440-43-9

‣ Cadmium vapor pressure

Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)5305836547458671040

‣ How many isotopes does cadmium have?

Main isotopes of cadmium
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
106Cd1.25 %stable
107Cdsyn6.5 hε107Ag
108Cd0.89 %stable
109Cdsyn462.6 dε109Ag
110Cd12.47 %stable
111Cd12.80 %stable
112Cd24.11 %stable
113Cd12.23 %7.7 × 1015 yβ113In
113Cdsyn14.1 yβ
IT
113In
113Cd
114Cd28.75 %stable
115Cdsyn53.46 hβ115In
116Cd7.51 %3.1 × 1019 yββ116Sn

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