Name: Antimony
Symbol: Sb
Atomic Number: 51
AtomicWeight: 121.760000
Family: metalloids
CAS RN: 7440-36-0
Description: A brittle silvery metal
State (25 °C): Solid
Melting Point: 904 °K
Boiling Point: 1860 °K
Density: 6.685 g/cm³
Oxidation states: +3,+5,-3
Electron Configuration: [Kr] 4d¹⁰5s²5p³
Radius: 145 pm (Covalent)
Electronegativity: 2.05 (Pauling Scale)

1st Ionization Energy: 834 KJ/mole
2nd Ionization Energy: 1595 KJ/mole
3rd Ionization Energy: 2440 KJ/mole