The weaker among the following types of bond is
ionic
covalent
metallic
H-bond
Among the following which compound will show the highest lattice energy?
KF
NaF
CsF
RbF
When the hybridisaiton state of carbon atom changes from sp3 to sp2 and finally to sp, the angle between the hybridised orbitals
Decreases gradually
Decreases considerably
Is not affected
Increases progressively
N2and O2, are converted into monoanions N-2 and O-2 respectively. Which of the following statements is wrong?
In N2, the N-N bond weakens
In O-2, O-O bond length increase
In O-2, bond order decreases
N-2, becomes diamagnetic
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
The boiling point of p-nitrophenol is higher than that of o-nitrophenol because
NO2 group at p-posiiton behave in a different way from that at o-position
Intramolecular hydrogen bonding exists in p-nitro phenol
There is intermolecular hydrogen bonding in p-nitrophenol
p-nitrophenol has a higher molecular weight than o-nitrophenol
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
Which one shows maximum hydrogen bonding?
H2Se
H2S
HF
Which one of the following has the highest dipole moment?
AsH3
SbH3
PH3
NH3