Which of the following statement 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 a 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, respectivley.
Which one of the following is the correct order of interactions ?
Covalant < hydrogen bonding < van der Waal's < dipole-dipole
van der Waal's < hydrogen bonding < dipole-dipole < covalent
van der Waals' < dipole-dipole < hydrogen bonding < covalent
Dipole-dipole < van der Waals' < hydrogen bonding < covalent
Which of the following species is para-magnetic ?
NO
CO
CN-
Which of the following molecule does not have a linear arrangement of atoms ?
H2S
C2H2
BeH2
CO2
Which one of the following is planar ?
XeF4
XeO4
XeO3F
XeO3F2
The ion that is isoelectronic with CO is
In which of the following bond angle is maximum?
NH3
PCl3
SCl2
Which one of the following is not paramagnetic ?
In and Y both are electronegative elements, then
electron density on X will increase and on H will decrease
in both electron density will increase
in both electron density will decrease
on X electron density will decrease and on H increase
In which of the following molecules are all the bonds not equal ?
ClF3
BF3
AlF3
NF3
