Which of the following is not a characteristics of alkali metals?

Good conductors of heat and electricity

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High oxidation potentials

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High melting points

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Solubility in liquid ammonia

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Solution

The correct option is C High melting points
They have weak metallic bonds because of the presence of one valence electron per atom. Also, they have larger atomic radius and hence, poor attraction between the valence electron and the nucleus. So, they have low melting points. Hence, they also have higher oxidation potentials for the same reason.

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