Periodic Table of Elements showing beryllium alkaline earth metal elements


Atomic Number4
Molar Mass9.01 gmol-1
Electron Configuration[He}2s2
Normal Statesolid metal
Density @STP1.85 g cm-3
Melting Point1287oC
Boiling Point2471oC
Stable Isotopes9Be,
Atomic Radius112 pm
Ionic Radius27 (2+) pm
Electronegativity (Pauling)1.57
Ionization Energy (1st)899 kJ mol-1
Ionization Energy (2nd)1757 kJ mol-1
Ionization Energy (3rd)14848 kJ mol-1
Molar Heat Capacity16.4 J K-1mol-1
Standard Molar Entropy9.5 J K-1mol-1
Enthalpy of Fusion9.8 kJ mol-1
Enthalpy of Vapourization308.8 kJ mol-1
[Back to Periodic table]

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