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Chemistry Question on Mole concept and Molar Masses

Consider the following species (I)S4O62−(II)S3O9(III)S2O52−(IV)P3O93−Which of the above species have same number of X−0−X linkages? (X=P or S)

A

(A) II and III

B

(B) I and IV

C

(C) II and IV

D

(D) I and II

Answer

(C) II and IV

Explanation

Solution

Explanation:
Three (S−0−S) linkageSo (ii) and (iv) have 3 "X-O-X" linkage.and (i) and (iii) have 0 "X-O-X" linkageThree (P−0−P) linkageNo s-o-s linkageSo (ii) and (iv) have 3′′X -O-X" linkage.and (i) and(iii) have 0′′X−O−X′′ linkage