Questions

Statement I : Melting points of Alkaline earth metals are lower than those of corresponding Alkali metals

Statement II : Metallic bonding is weaker in IIA group elements than IA group elements.

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Statement I and II are correct and statement II is the correct explanation of I

Statement I and II are correct but statement II is not the correct explanation of I

Statement - I is true and Statement- II is false

Both statement - I and statement - II are False

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detailed solution

Correct option is D

Melting points of alkaline earth metals(IIA) are greater than that of alkali metals (IA)Reason1) Size of alkaline earth metals are smaller when compared to alkali metals and hence inter atomic attractions [metallic Bond] in alkaline earth metals are strong than alkali metals2) Number of valency electrons involved in metallic bond is "2" in case of IIA group elements, where as number of valency electron involved in metallic bond is (1) in the case of IA group elementsBoth statement - I and statement - II are False