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Cadmium



Name Cadmium
Atomic Number 48
Atomic Weight 112.411
Symbol Cd
Melting Point ( °C ) 321.1°C
Boiling Point ( °C ) 766.8°C
Density (g/cm3) 8.65 g/cm3
Earth crust (%) 0.000015%
Discovery (Year) 1817
Group 12
Electron configuration Kr 4d10 5s2
Ionization energy (eV) 867.78


Cadmium Chemical symbol-Cd and the Atomic mass is 112.411.

The relative abundance of its most abundant isotope of Cadmium is 116Cd 115.904755
(1)-Isotope
(2)-Atomic mass (ma/u)
(3)-Natural abundance (atom %)
1-106Cd
2-105.906461 (7)
3-1.25 (6)
1-108Cd
2-107.904176 (6)
3-0.89 (3)
1-110Cd
2-109.903005 (4)
3-12.49 (18)
1-111Cd
2-110.904182 (3)
3-12.80 (12)
1-112Cd
2-111.902757 (3)
3-24.13 (21)
1-113Cd
2-112.904400 (3)
2-12.22 (12)
3-1/2
1-114Cd
2-113.903357 (3)
3-28.73 (42)
1-116Cd
2-115.904755 (4)
3-7.49 (18)
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What it is used for: Cadmium is a component of Ni-Cd batteries. Cadmium is used in some control rods and shields within nuclear reactors.
Cadmium is used in black and white television phosphors and in blue and green phosphors for colour TV tubes.
A kg of cadmium is $4.19
abundant in Earth is 150 ppd weight or cadmium is 150 parts per billion by weight, 30 parts per billion by moles on earth.
abundant in universe  2 ppd weight or 6 parts per billion by weight, 70 parts per trillion by moles.
It is a transition metal.
The normal phase is a solid and under normal conditions it is a solid at 298 K.
Cadmiums density at normal conditions is 8.65 g·cm−3(at 0 °C, 101.325 kPa)
Boiling point: 765 oC, 1038 K
Its melting point is 610°F (321.1°C)
It is a Conductor. There are 20 known radioactive elements but only 2 of them are natural.
They are beta decay and half-life is 7.7 × 1015 years.

Discovery

Discovered :  Friedrich Stromeyer in 1817 from an impurity in some samples of zinc carbonate, ZnCO3
1817 in Germany by Karl Samuel Leberecht Herman and Friedrich Stromeyer

References

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http://www.webelements.com/cadmium/isotopes.html



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