Question

How does the basic character of hydroxides of alkali metals vary down the group?

Answer 1

Explanation:

The alkali metal oxides are basic in nature. ... As we move down the group, the size of the metal ion increases, so the bonding between the metal and hydroxide ion is weak. Hence, they can easily lose OH- ion. So, down the group, basicity of alkali metal oxides and hydroxides increases.

Answer 2

The basic character of hydroxides of alkali metals increases down the group.

Explanation:

We know that atomic size of elements increases on moving down a group. As a result, metals can easily lose an electron in order to obtain stability.

Also we know that metals tend to form basic oxides and hydroxides. As the ability of metals increases to lose an electron so does their basic character increases down the group due to larger atomic size of atoms.

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