Question

Why acidic character of oxides decreases down the group 15?

Answer 1

Down the group size increases electronegativity decreases and metallic character increases therefore oxides charcter decrease

Answer 2

Explanation:

Elements of group 15 are N, P As, Sb, Bi. These elements of group 15 generally exhibit -3, +3 and +5 oxidation states. When we move down towards the group tendency of -3 oxidation state, it will decreases. Also we found change in the characteristics of the elements. Their electro negativity decreases while the atomic size increases. Metallic character also increases and so acidic character of oxides decreases and their basicity increases.