An sp3 - hybrid orbital contains
1/4 s-character
1/2 s-character
1/3 s-character
2/3 s-character
In which one of the following molecules, the central atom said to adopt sp2-hybridisation ?
BeF2
BF3
C2H2
NH3
Mark the incorrect statement in the following.
The bond order in the species O2,
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.
Which one is not para-magnetic among the following? [At. No. Be = 4, Ne = 10, As = 33, Cl = 17]
Cl-
Be
Ne2+
As-
The ion that is isoelectronic with CO is
Among the following which compound will show the highest lattice energy ?
KF
NaF
CsF
RbF
Which one of the following formulae does not correctly represent the bonding capacities of the atoms involved ?
In which of the following molecules are all the bonds not equal ?
ClF3
AlF3
NF3
The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is
2
3
4
1
Which of the following does not have a tetrahedral structure ?
BH4
BH3
H2O
