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Antimony

Antimony Properties
Name Antimony
Atomic Number 51
Atomic Weight 121.8
Sym. Sb
M.P.(°C) 630
B.P.(°C) 1750
Density*(g/cm3) 6.68
Earth crust (%)* 0
Discovery(Year) ancient
Group* 15
Electron configuration [Kr] 4d10 5s2 5p3
Ionization energy (eV) 8.6084
Protons / Electrons 51
Neutrons 71
Classification Metalloid
Crystal Structure Rhombohedral
Color bluish

Automic Structure of Antimony

Antimony Atomic structure of Antimony consists of 5 Energy Levels. There are total number of protons/Electrons are 51 and Neutrons are 71.

In each level there will be different number of Protons/Electrons are present, shown below.

First Energy Level : 2
Second Energy Level : 8
Third Energy Level : 18
Fourth Energy Level : 18
Fifth Energy Level : 5