JEE Main Chemistry question

Alkali metals are soft and have relatively low m.p. and low density. This is because:

(A)Interatomic bonds are weakCorrect
(B)Interatomic bonds are strong
(C)Of their ionization potential
(D)Of their position in the periodic table

Answer: (A)

Solution

Alkali metals contribute only a single valence electron per atom to metallic bonding, giving a weak metallic bond (weak interatomic attraction), which directly explains their softness, low melting points and low densities. Strong interatomic bonds (B) would instead predict hardness and

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Question ID VK-137762