question_answer

Molecular formula is incorrect of which of the following compounds?

(i) Copper (II) bromide \[\to CuB{{r}_{2}}\]

(ii) Aluminum (III) nitrate \[\to Al{{(N{{O}_{3}})}_{2}}\]

(iii) Calcium (II) phosphate \[\to C{{a}_{3}}{{(P{{O}_{2}})}_{4}}\]

(iv) Iron (III) sulphide \[\to Fe{{S}_{3}}\]

(v) Mercury (II) chloride \[\to HgC{{l}_{2}}\]

(vi) Magnesium (II) acetate \[\to Mg{{(C{{H}_{3}}COO)}_{2}}\]

A) (i), (v), (vi)

B) (ii), (iii), (iv)

C) (i), (ii), (vi)

D) (ii), (iv), (vi).

E)  None of these