Question

Tendency to form pentahalides decreases down the grp why ?

Answer 1

Tendency to form pentahalides decreases down the group in group 15 of the periodic table. The tendency to form pentahalide decrease down the group. This because of inert pair effect. Due to the inert pair effect, ns2 electron remains inert in a chemical reaction and element shows -2 oxidation state.

Answer 2

Tendency to form pentahalides decreases down the group in group 15 of the periodic table. ... The tendency to form pentahalide decrease down the group. This because of inert pair effect. Due to the inert pair effect, ns2 electron remains inert in a chemical reaction and element shows -2 oxidation state.

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