Compared with alkaline earth metals, the alkali metals exhibit:

smaller ionic radii

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greater hardness

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high boiling point

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lower ionization energies

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Solution

The correct option is D
lower ionization energies

General electronic configuration for alkali metals is $n s^{1}$ and alkaline earth metals are $n s^{2}$ . Due to completely filled s-orbital, alkaline earth metals have a higher I.P than Alkali metals.

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Compared with alkaline earth metals, the alkali metals exhibit:

The correct option is D lower ionization energies General electronic configuration for alkali metals is ns1 and alkaline earth metals are ns2. Due to completely filled s-orbital, alkaline earth metals have a higher I.P than Alkali metals.

The correct option is D
lower ionization energies

General electronic configuration for alkali metals is $n s^{1}$ and alkaline earth metals are $n s^{2}$ . Due to completely filled s-orbital, alkaline earth metals have a higher I.P than Alkali metals.