Which of the following molecules does not have a linear arrangement of atoms?
H2S
C2H2
BeH2
CO2
The correct order of N-O bond lengths in NO, NO-2, NO-3 and N2O4 is
NO-2O4 > NO-2 > NO-3>NO
NO> NO-3>N2O4 >NO-2
NO-3 > NO-2 > N2O4>NO
NO > N2O4 > NO-2 > NO-3
The high density of water compared to ice is due to
Hydrogen bonding interactions
Dipole-dipole interactions
Dipole-induced dipole interactions
Induced dipole-induced dipole interactions
The dielectric constant of H2O is 80. The electrostatic force of attraction between Na+ and CI- 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
The BCI3 is a planar molecule whereas NCI3 is pyramidal because
B - CI bond is more polar than N-CI bond
N-CI bond is more covalent than B-CI bond
Nitrogen atom is smaller than boron atom
BCI3 has no lone pair but NCI3 has a lone pair of electrons
Which of the following does not have a tetrahedral structure?
BH-4
BH3
NH+4
H2O
Among the following which compound will show the highest lattice energy?
KF
NaF
CsF
RbF
Linear combination of two hybridised orbitals belonging to the two atoms, each having one electron leads to a
Sigma bond
Double bond
coordinate bond
Pi-bond
Which of the following statement is not correct?
Double bond is shorter than a single bond
Sigma bond is weaker than a π (pi) bond
Double bond is stronger than a sing bond
Covalent bond is stronger than hydrogen bond
Which structure is linear?
SO2
CO2-3
SO2-4
