Question

Among s-block metals which element is an exception
A) Hydrogen B) Helium C) Barium D) No exception​

Answer 1

Explanation:

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.

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Answer 2

Answer:

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.