Long Answer TypeWhat is meant by hybridization of atomic orbitals? Describe the shapes of sp, sp2, sp3 hybrid orbitals.
Descibe the hybridisation in case of PCl5. Why are the axial bonds longer as compared to equatorial bonds?
Short Answer TypeLong Answer TypeWhat is meant by the term bond order? Calculate the bond order of: 
Bond order is defined as one-half of the difference between the number of electrons present in the bonding and anti-bonding orbitals of the molecule.
If Na is equal to the number of electron in an antibonding orbital, then
Nb is equal to the number of electron in a bonding orbital.
1/2(Nb-Na)
If Nb>Na, then the molecule is said to stable. However, if Nb
Multiple Choice QuestionsThe species in which the N atom is in a state of sp hybridization is:
NO2-
NO3-
NO2
NO2
The ionic radii (in Å) of N3–, O2– and F– are respectively:
1.36, 1.40 and 1.71
1.36, 1.71 and 1.40
1.71, 1.40 and 1.36
1.71, 1.40 and 1.36
In which of the following pairs of molecules/ions, both the species are not likely exist?
Which of the following exists as covalent crystals in the solid state?
Iodine
Silicon
Sulphur
Sulphur
bond.
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