Hydrogen bond is strongest in :
(A) `S-H---O`
(B) `O-H---S`
(C) `F-H---F`
(D) `O-H---N`

The increasing order of the strength of hydrogen bond in the following mentioned linkage is : (P) "O"-"H---S" (Q) "S"-"H---O" (R) "F"-"H---F"^(-) (S) "F"-"H---O"

The H - O - O bond angle in H_(2)O_(2) (g) is

The O-O-H bond angle in H_2 O_2 is ?

Which of the following has fractional bond order? (A) O_(2)^(2+) (B) O_(2)^(2-) (C) F_(2)^(2-) (D) H_(2)^(-)