The stability of `+5` oxidation state decreases down the group `15` of the periodic table.Explain this observation giving appropriate reasons.

Explain, why stability of +5 oxidation state decreases down the group 15 of the periodic table?

Atomic size increases down a group of the periodic table. Explain.

On moving down a group of the periodic table,

Why does the stability of + 5 oxidation state decrease on moving down the group ?

(a) Complete the following chemical reaction equations : (i) P_(4)+SO_(2)Cl_(2) rightarrow (ii) XeF_(4)+ H_(2)O rightarrow (b) Explain the following observations giving appropriate reasons : (i) The stability of + 5 oxidation state decreases down the group in group 15 of the periodic table. (ii) Solid phosphorus pentachloride behaves as an ionic compound. (iii) Halogens are strong oxidizing agents.

Complete the following chemical reaction equations : (i) P_(4)+SO_(2)Cl_(2) rightarrow (ii) XeF_(4)+ H_(2)O rightarrow (b)Explain the following observations giving apporiate reasons : (i) The stability of + 5 oxidatin state decreases down the group in group 15 of the periodic table. (ii) Solid phosphorus pentachloride behaves as an ionic compound. (iii) Halogens are strong oxidizing agents.