The correct order of the O-O bond length in O2, H2O2 and O3 is
O2 > O3 > H2O2
O3 > H2O2 > O2
O2 > H2O2 > O3
H2O2 > O3 > O2
Strongest hydrogen bonding is shown by
H2O
NH3
HF
H2S
Which of the following pairs will form the most stable ionic bond ?
Na and Cl
Mg and F
Li and F
Na and F
Among LiCl, BeCl2, BCl3 and CCl4, the covalent bond character follows the order
LiCl < BeCl2 > BCl3 > CCl4
LiCl < BeCl2 > BCl3 < CCl4
LiCl < BeCl2 < BCl3 < CCl4
LiCl > BeCl2 > BCl3 > CCl4
The relationship between the dissociation energy of N2 and is
dissociation energy of > dissociation energy of N2
dissociation energy of N2 = dissociation energy of
dissociation energy of N2 > dissociation energy of
dissociation energy of N2 can either be lower or higher than the dissociation energy of
Which one of the following is planar ?
XeF4
XeO4
XeO3F
XeO3F2
Which of the following does not have a tetrahedral structure ?
BH4
BH3
Linear combination of two hybridised orbitals belonging to the two atoms, each having one electron lead to a
sigma bond
double bond
coordinate bond
pi-bond
Which of the following molecule does not have a linear arrangement of atoms ?
Overlapping valence orbitals
Mobile valence electrons
Delocalised electrons
Highly directed bonds
Which one is not para-magnetic among the following? [At. No. Be = 4, Ne = 10, As = 33, Cl = 17]
Cl-
Be
Ne2+
As-
