Octet rule is not followed in the set
(A)`C Cl_(4)`, `N_(2)O_(4)` and `N_(2)O_(5)`
(B) `BF_(3)`, `BeCl_(2)` and `NO_(2)`
(C) `NaCl`, `MgCl_(2)` and `MgO`
(D) `PCl_(3)`, `NH_(3)` and `H_(2)O`

The weakest N -N bond is present in (A) N_(2)O_(3) (B) N_(2)O_(4) (C) N_(2)H_(4) (D) N_(3)^(-)

Arrange the following in order of decreasing bond angles (i) CH_(4), NH_(3), H_(2)O, BF_(3), C_(2)H_(2)" "(ii) NH_(3), NH_(2)^(-), NH_(4)^(+)

Which of the followings are Lewis acids: H_(2)O, BF_(3), H^(o+) and NH_(4) ?

Arrange the following sets of molecules in the decreasing order of bond angle : (i) SF_(6), C Cl_(4), H_(2)O, NH_(3) (ii) CH_(4), NH_(3), H_(2)O, BF_(3) (iii) AlCl_(3), H_(2)S, BeH_(2), H_(2)O

Number of Chemical species having bond between nitrogen atoms N_(2)O_(4), N_(2)O_(5), N_(2)H_(4), N_(2)O, N_(2)O_(3), NH_(4)NO_(3), H_2N_2