When the hybridisation state of carbon atom changes from Sp3 and finally to Sp, the angle between the hybridised orbitals.
Decreases gradually
Decrease considerably
Is not affected
Increases progressively
Which of the following has Pπ - dπ bonding ?
NO3-
SO32-
CN - ,CO
SO2, CO2
In a regular octahedral molecule, MX6, the number of X-M-X bonds at 180o is_______________.
3
2
6
4
H2O has a net dipole moment while BeF2 has zero dipole moment because
H2O molecule is linear while BeF2 is bent.
BeF2 molecule is linear while H2O is bent.
Fluorine has more electronegativity than oxygen
Beryllium has more electro negativity than oxygen.
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 shows maximum hydrogen bonding?
H2O
H2Se
H2S
HF
The type of hybridization of boron in diborane is ______________.
Sp- hybridization
Sp2- hybridization
Sp3- hybridization
SP3d2- hybridization
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
Which one of the following statements is not correct for sigma and Pi bonds formed between two carbon atoms?
Free rotation of atoms about a sigma bond is allowed but not in case of Pi bond.
Sigma bond determines the direction between carbon atoms but a Pi bond has no primary effect in this regard.
Sigma bond is stronger than a Pi bond.
Bond energies of sigma and Pi bonds are of the order of 264 KJ / mol and 347 KJ/ mol, respectively.
H2O, is dipolar, whereas Be F2 is not. It is because
The electro negativity of F is greater than that of O
H2O involves hydrogen bonding whereas Be F2 is a discrete molecule.
H2O is linear and Be F2 is angular
H2O is angular and BeF2 is linear .
