Question

Arrange the following ions in the order of decreasing X-0 bond length, where X is the central atom in $SiO_4^{4-},ClO_4^- ,PO_4^{3-},SO_4^{2-}$

• A. $ClO_4^- > SO_4^{2-} > PO_4^{3-} > SiO_4^{4-}$
• B. $SiO_4^{4-} > PO_4^{3-} > SO_4^{2-} > ClO_4^{-}$
• C. $SiO_4^{4-} > PO_4^{3-} > ClO_4^{-} > SO_4^{2-} $
• D. $SiO_4^{4-} > SO_4^{2-} > PO_4^{3-} > ClO_4^-$
• E. $SO_4^{2-} > PO_4^{3-} > ClO_4^- >SiO_4^{4-}$

Answer 1

Answer: (B)

As the number of double bonds increases, X-O bond length decreases