ANTIMONY



Atomic Number: 51
Mass Number: 121.75
Electron Configuration: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p³
Density: 6.69 g/cm³
Melting Point: 631^oC
Boiling Point: 1750^oC
First Ionization Energy: 831 kJ/mol
Second Ionization Energy: 1595 kJ/mol
Third Ionization Energy: 2440 kJ/mol
Fourth Ionization Energy: 4260 kJ/mol
Covalent Radius: 143 pm