Select the correct statement about elements of group 15th.

Question

Select the correct statement about elements of group 15th., The order of stability of oxidation state for +3 is B i 3 + > S b 3 + > A s 3 + and for +5 is B i 5 + S b 5 + A s 5 +, In the case of nitrogen, all oxidation states from +1 to +4 tend to disproportionate in acid solution., There is considerable increase in covalent radius from N to P but from As to Bi only a small increase in covalent radius is observed., All of these

MARKS App · Accepted Answer

(i) This is due to the inert pair effect in the heavier p-block elements. (ii) 3 H N O 2 → H N O 3 + H 2 O + 2 N O (iii) This is due to the presence of completely filled d and l or f orbitals in heavier elements. Covalent radius l pm; N = 70, P = 110, As = 120, Bi = 150.

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