Consider the following silicates
(a) `BaTi(Si_(2)O_(9))`
(b) `ZnCa_(2)Si_(2)O_(7)`
Then calculate X+Y, where X and Y are total number of monovalent and divalent oxygen atoms in both silicates respectively.

Consider the following complexes: (i) [FeIF(CN)(H_(2)O)(en)] (ii) [MoCl_(2)F_(2)(gly)]^(2-) Then, calculate value of |x-y| (where x and y are total number of possible optically active isomers in (i) and (ii) complex respectively).

Consider following four compounds: (i) C_(x) O_(y) (ii) C_(x)O_(y+1) (iii) C_(x+2)O_(y+1) and (iv) C_(x+11)O_(y+8) , if "x=y=1", then calculate the vlaue of |p-q|, where p and q are total number of sp^(2) and hybridized carbon atoms respectively in given four compounds.

Consider following three compounds: (i) C_(x)O_(y) (ii) C_(x) O_(y+ 1) (iii) C_(x + 2) O_(y + 1) If x = y = 1 , then calcuate the value of |p - q| , where p and q are total number of sp^(2) and sp hybridised carbon atoms respectively in given three compounds.

Consider the following three compounds (i)AX_(2n)^(n-) , (ii) AX_(3n) and (ii) AX_(4n)^(n+) , where central atom A is 15th group element and their maximum covalency is 3n. If total number of proton in surrounding atom X is n and value of n is one, then calculate value of x^(3)+y^(2)+z^(2) . (where x, y and z are total number of lone pair at central atom in compounds (i), (ii) and (iii) respectively.

Consider the following set of reaction: Z=LiAlH_(4)toX+LiF+AlF_(3) X+H_(2)OtoY+H_(2) X+O_(2)overset(Delta)toB_(2)O_(3)+H_(2)O Then calculate the total number of boron atoms in one molecule each of compounds X, Y and Z.

Which of the following statement is correct for both P_(2)O_(8)^(4-) and Si_(2)O_(7)^(6-) ions?