First slide

Hydrogen

Question

Hydrogen resembles halogens in all the following properties except

Moderate

A

Oxidizing metals
B

High Ionization potential
C

Liberation of hydrogen gas at anode
D

Bond enthalpy of diatomic molecule

Solution

B.D.E of H₂ is very high(436 kJ/mole) whereas B.D.E of X₂ is low.
Repulsions between lone pairs weaken X-X bonds.

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