Assertion : The first ionization enthalpy of aluminium is lower than that of magnesium

CHEMISTRY · Subjective · A Level · Chemistry · Periodicity and periodic trends · Periodicity and periodic trends

Problem

Assertion : The first ionization enthalpy of aluminium is lower than that of magnesium. Reason : Ionic radius of aluminium cation is smaller than that of magnesium cation.

Related theory

Ionisation enthalpy
Classification of Elements and Periodicity in Properties
Ionisation potential
Periodic Trends in Physical Properties

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