The ion that is isoelectronic with CO is
O-2
N-2
CN-
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
Chemical Bonding
0
1
2
3
Among the following which compound will show the highest lattice energy?
KF
NaF
CsF
RbF
Mark the incorrect statement in the following.
The bond order in the species O2, O-2 and O-2decreases as O-2>O2>O-2
The bond energy in a diatomic molecule always increases when an electron is lost
Electrons in antibonding MO contribute to repulsion between two atoms
With increase in bond order, bond length decreases and bond strength increases
Among the following group which represents the collection of isoelectronic species?
NO, CN-, N2, O-2
NO+, C2-2, O-2, CO
N2, C2-2 , CO, NO
CO, NO+ , CN- , C2-2
In which of the following molecules, the central atom said to adopt sp2-hybridisation?
BeF2
BF3
C2H2
NH3
AsF5 molecule is trigonal bipyramidal. The hybrid orbitals used by As atoms for bonding are
dx2-y2,dz2, s,px,py
dxy, s, px, py,pz
s,px,py,pz,dxy
dx2-y2,s,px,py,pz
Which of the following is not a correct statement?
The electron-deficient molecules can act as Lewis acids.
The canonical structures have no real existence.
Every AB5 molecule does infact have square pyramid structure.
Multiple bonds are always shorter than corresponding single bonds.
Which one of the following formulae does not correctly represent the bonding capacities of the atoms involved?
