1.

Consider the following oxyanions : PO_(4)^(3-), P_(2)O_(6)^(4-), SO_(4)^(2-), MnO_(4)^(-), CrO_(4)^(2-), S_(2)O_(5)^(2-), S_(2)O_(7)^(2-) and find the value ofR+Q-P where P=Number of oxy aions having three equivalent X-O bonds per central atom O=Number of oxy anions having two equivalent X-O bonds per central atom R=Number of oxy anions having four equivalent X-O bonds per central atom

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SOLUTION :
`P=3, R=4, Q=2`


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