Compare the alkali metals and alkaline earth metals with respect to ionization enthalpy
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The first ionisation enthalpies of alkaline earth metals are higher than those of alkali metal.
This is because of the increased nuclear charge.
But the 2nd ionisation enthalpies of alkaline earth metals are lower than corresponding alkali metals i.e. 1st ionisation enthalpy of Be > Li.
This is because of the increased nuclear charge.
But the 2nd ionisation enthalpies of alkaline earth metals are lower than corresponding alkali metals i.e. 1st ionisation enthalpy of Be > Li.
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