Periodic Table of Elements showing Antimony metalloid elements





Antimony

ElementAntimony
SymbolSb
Atomic Number51
Molar Mass121.75 gmol-1
Electron Configuration[Kr]4d105s25p3
Normal Statesolid metalloid
Density @STP6.69 g cm-3
Melting Point631oC
Boiling Point1587oC
Stable Isotopes121Sb, 123Sb
Atomic Radius141 pm
Ionic Radius89 (3+) pm
Electronegativity (Pauling)2.05
Ionization Energy (1st)834 kJ mol-1
Ionization Energy (2nd)1794 kJ mol-1
Ionization Energy (3rd)2443 kJ mol-1
Molar Heat Capacity25.2 J K-1mol-1
Standard Molar Entropy45.7 J K-1mol-1
Enthalpy of Fusion20.9 kJ mol-1
Enthalpy of Vapourization67.91 kJ mol-1
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