Statement (A): Metals have low I.E so that valence electrons are easily removed from the atoms.
Statement (B): In metals mobile electrons move randomly in different directions.
Statement (C): Na, K are soft metals.

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A, B are incorrect and C is correct

All the statements A, B and C are correct

All the above statements A, B and C are incorrect

A, B are correct and C is incorrect

answer is A.

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Detailed Solution

Metals have large atomic sizes so, the distance between nucleus and valence electrons is more. Hence the valence electrons are less attracted by the nucleus. Therefore, to remove valence electrons from the metal atom less energy is sufficient. So metals have low I.E

In metals, mobile electrons move randomly in different directions.

Na, K are soft metals because these metals have one valence electron and low charge in their nucleus. Hence the metallic bond is weak in Na and K. Therefore the statements I, II and III are correct.

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