1.

The first ionisation energies of alkaline earth metals are higher than those of the alkali metals. This is because   [MP PET 1996]

A. There is increase in the nuclear charge of the alkaline earth metals
B. There is a decrease in the nuclear charge of the alkaline earth metals
C. There is no change in the nuclear charge
D. None of the above
Answer» B. There is a decrease in the nuclear charge of the alkaline earth metals


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