Consider the following oxyanions: , , , , ,

CHEMISTRY · Subjective · CBSE · Chemistry · Chemical Bonding and Molecular Structure · Chemical Bonding and Molecular Structure

Problem

Consider the following oxyanions:

\text{PO}_4^{3-}

\text{P}_2\text{O}_6^{4-}

\text{SO}_4^{2-}

\text{MnO}_4^-

\text{CrO}_4^{2-}

\text{S}_2\text{O}_5^{2-}

, and

\text{S}_2\text{O}_7^{2-}

. Find the value of

r+q-p

, where

p

is the number of oxyanions having three equivalent

X

–

O

bonds per central atom,

q

is the number having two equivalent

X

–

O

bonds per central atom, and

r

is the number having four equivalent

X

–

O

bonds per central atom.