Q.The second ionization enthalpy of $Ca$ is higher than its first because:

Ca^+

is smaller than

Ca

Ca^{2+}

is larger than

Ca^+

Ca

has noble gas configuration

Ionization enthalpy always increases for successive electrons

The correct solution involves applying the fundamental concept to derive the final value step by step...

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Q.The second ionization enthalpy of CaCaCa is higher than its first because: