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Define octet rule. Write its significance and limitations.
Describe the hybridisation in case of PCl5. Why are the axial bonds longer as compared to equatorial bonds?
What is the molecular geometry of SF6 as predicted by VSEPR theory?
The correct order of hybridization of the central atom in the following species: NH3, [PtCl4]²⁻, PCl5 and BCl3 is
Sp³d² hybridization is present in [Co(NH3)6]³⁺, Find its geometry.
(a) Why are resonance structures necessary to describe the bonding in molecules like benzene, carbonate ion, or nitrate ion? (b) Given two molecules—SF₆ and NH₃—evaluate which one better conforms to the octet rule and justify your answer. (c) Which of the two compounds will have intermolecular hydrogen bonding and which compound is expected to show intramolecular hydrogen bonding
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