Elements
48

Cd

Cadmium

Cadmium (Cd) is a blue-white metal that has the atomic number 48 in the periodic table. It is a Transition metal and located in Group 12 of the periodic table. It has the symbol Cd.

Cadmium occurs in small quantities in zin ores and is obtained as a by product from mining copper and zinc. Cadmium was discovered by Friedrich Stromeyer in 1817 through his work on Zinc oxide. Heating Zinc carbonate produced a yellow/orange substance when zinc oxide should be white. He extracted the unknown metal from the metal oxide and isolated Cadmium metal. It is named after the Latin ‘Cadmia’ the old name for the zinc ore it is found in. Cadmium is used in the production of batteries, especially rechargeable nickel-cadmium batteries. It is also used in alloy production where it can be used to lower the melting point of other metals. It is located in Group 12 as a Transition metal. It has a melting point of 321°c and a boiling point of 765°c.

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FAQ's

What is the Melting Point for Cadmium?

Cadmium has a Melting Point of 320.9°F, meaning at 320.9°F it will turn to a liquid.

What is the Boiling Point for Cadmium?

Cadmium has a Boiling Point of 765°F, meaning at 765°F it will turn to a Gas.

What is the Electronegativity of Cadmium?

Cadmium's Electronegativty is 1.69. Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.

What is the Heat of Vaporization of Cadmium?

Cadmium has a Heat of Vaporization of 99.57 kJ/mol.

Uses

Used in nickel-cadmium batteries. Also in electroplating steel and in the manufacture of berings. Its compounds are found in paint pigments and a wide variety of intense colors. Boiling cadmium gives off a weird, yellow-colored vapor that is poisonous.

Sources

Obtained as a by product of zinc refining.

48
Protons
48
Electrons
64
Neutrons

Cd

Element Symbol
Cd
Atomic Weight
112.414
Atomic Number
48
State
Solid
Melting Point
Unknown
320.9
°C
Boiling Point
765
Unknown
°C
Heat of Vaporization
99.57
Unknown
kJ/mol
Crystal Structure
Hexagonal
Thermoconductivity
0.968
Unknown
W/cmK
Shells
2,8,18,18,2
Group
Transition Metal
Period
5
Block
D Block
Orbitals
[Kr] 4d10 5s2
Coefficient of Thermal Expansion
30.8 10^-6 K^-1
Covalent Radius
1.48 Å
Density at 293K
8.65 g/cm³
Electrical Conductivity
0.138 10^6/cm ohm
First Ionization Potential
8.9937 V
Second Ionization Potential
16.908 V
Third Ionization Potential
37.48 V
Ionic Radius
.95 (+2) Å
Oxydation States
2
Lattice Parameter
2.9789 Å
Lattice Parameter 2
--
Lattice Parameter 3
a=57° 6'27"
Pronounced

KAD-me-em

Discovered by

Fredrich Stromeyer

Discovery date

1817

Orbital configuration
2,8,18,18,2

Download the Periodic Table

Explore Other Transition Metals

102.905
45

Rh

Rhodium
58.933
27

Co

Cobalt
270
108

Hs

Hassium
65.38
30

Zn

Zinc
270
107

Bh

Bohrium
44.956
21

Sc

Scandium
107.868
47

Ag

Silver
196.967
79

Au

Gold
200.592
80

Hg

Mercury
58.693
28

Ni

Nickel
186.207
75

Re

Rhenium
47.867
22

Ti

Titanium
183.84
74

W

Tungsten
92.906
41

Nb

Niobium
95.95
42

Mo

Molybdenum
195.084
78

Pt

Platinum
180.948
73

Ta

Tantalum
270
105

Db

Dubnium
178.49
72

Hf

Hafnium
192.217
77

Ir

Iridium
54.938
25

Mn

Manganese
51.996
24

Cr

Chromium
285
112

Cn

Copernicium
269
106

Sg

Seaborgium
55.845
26

Fe

Iron
190.23
76

Os

Osmium
267
104

Rf

Rutherfordium
88.906
39

Y

Yttrium
101.07
44

Ru

Ruthenium
97
43

Tc

Technetium
50.942
23

V

Vanadium
106.42
46

Pd

Palladium
63.546
29

Cu

Copper
91.224
40

Zr

Zirconium
Transition metal is any of various chemical elements that have valence electrons (electrons that can participate in the formation of chemical bond) in two shells instead of only one. They form group 3 (IIIb) through group 12 (IIb).
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