Mark the incorrect statement in the following.
The bond order in the species O2, O2+ and O2- decreases as O2+> O2>O2-
The bond energy in a diatomic molecule always increases when an electron is lost.
Electrons in antibonding molecule contribute to repulsion between two atoms.
With increase in bond order, bond length decreases and bond strength increases.
The angle between the overlapping of one s- orbtial and one p- orbital is
180o
120o
109o 28'
120o 60'
Among the following, the pair in which the two species are not isostructural, is
Si F4 and SF4
IO3- and Xe O3
BH4- and NH4+
PFG- and SF6
Which of the following molecule does not have a linear arrangement of atoms?
H2S
C2 H2
HCN
CO2
The dielectric constant of H2O is 80. The electrostatic force of attraction between Na+ and Cl- will be________
Reduced to 1/40 in water than in air.
Reduced to 1/80 in water than in air.
Will be increased to 80 in water than in air
Will remain unchanged
Which one of the following is the correct order of interactions?
Covalent
Van der waal's < hydrogen bonding < dipole - dipole< covalent
Van der Waal's < dipole- dipole< hydrogen bonding < covalent
Dipole-dipole
Among the following which compound will show the highest lattice energy?
KF
NaF
CsF
RbF
Which one shows maximum hydrogen bonding?
H2O
H2Se
HF
The weakest among the following types of bond is _________.
Ionic
Metallic
H- bond
Which of the following does not apply to metallic bond?
Overlapping valence orbitals
Mobile valence electrons
Delocalised electrons
Highly directed bonds