Question

What are the exceptions in s-block?



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Answer 1

Answer:

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In the S block elements, the density of the alkali metals increases down the group. Exception: the density of potassium is less than the density of sodium. The alkali metals have a low melting and boiling point due to the weak metallic bonding.

Answer 2

Explanation:

Refractive index of a medium depends upon the refractive index of the surroundings