Chemistry - Salt Analysis Question with Solution | TestHub

A white crystalline solid $\mathbf{X}$ exhibits the following reactions:

(i) It is a binary salt.

(ii) It imparts a yellow color to the nonluminous Bunsen burner flame.

(iii) In an aqueous solution of $\mathbf{X}$, $[H_3{O}^{+}][O{H}^{-}]=10^{-14}$.

(iv) On addition of $AgN{O}_3$ to an aqueous solution of $\mathbf{X}$, a yellow precipitate is obtained which is insoluble in $N{H}_3$.

(v) The yellow precipitate obtained in (iv) readily dissolves by adding excess of KCN or $N{a}_2{S}_2{O}_3$.

(vi) On addition of $CuS{O}_4$ to an aqueous solution of $\mathbf{X}$, the solution turns brown, and a

white precipitate is obtained on addition of $N{a}_2{S}_2{O}_3$.

If the cationic element belongs to group number $p$ and the anionic element belongs to period number $q$ in the modern periodic table, then what is the value of $(p+q)$?