CBSE Class 11-science Answered

(i)           Let the metal cation be A²⁺

(ii)          Oxy acid means compounds containing hydrogen, oxygen, and another element.

(iii)         The 'per' acidic radical will be ClO₄^-  since it is a per acid ion and formula of salt will be A(ClO₄)₂

(iv)         Now, determine the number of atoms of each constituent element present in one molecule of the salt.

Cl = 2N_A atoms, O = 8N_A atoms in 1 molecule of salt i.e. in 1 mole of salt.

(v)          Now, the number of atoms of each constituent element present in 0.5 moles of the salt will be

Cl = N_A atoms, O = 4N_A atoms

Where N_A is Avogadro's number