Which of the following molecules does not have a linear arrangement of atoms?
H2S
C2H2
BeH2
CO2
In which of the following molecules, the central atom said to adopt sp2-hybridisation?
BeF2
BF3
NH3
Which one of the following has the highest dipole moment?
AsH3
SbH3
PH3
Which statement is not correct?
A sigma bond is weaker than a π- bond
A sigma bond is stronger than a π -bond
A double bond is stronger than a single bond
A double bond is shorter than a single bond
Strongest hydrogen bonding is shown by
H2O
HF
Among LiCI, BeCI2, BCI3 and CCI4, the covalent bond character follows the order
LiCI < BeCI2 > BCI3 > CCI4
LiCI < BeCI2 < BCI3 > CCI4
LiCI < BeCI2 < BCI3 < CCI4
LiCI > BeCI2 > BCI3 > CCI4
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 angle between the overlapping of one s-orbital and one p-orbital is
180o
120o
109o28'
120o,60'
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
