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 Type
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
C.
1.71, 1.40 and 1.36
Number of electrons in N3- = 7+3 = 10
Number of electrons in O2- = 8+2 = 10
Number of electrons in F- = 9+1 = 10
Since, all the three species have each 10 electrons hence they are isoelectronic species.
It is considered that, in case of isoelectronic species as the negative charge increase, ionic radii increase and therefore the value of ionic radii are
N3- = 1.71 (highest among the three)
O2- = 1.40
F- = 1.36 (lowest among the three)
N3- > O2-> F-
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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