Which one of the following is not correct ?

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The central atoms in PF3, ClF3 and XeF2 have sp3d hybridisation

The “bond order” of H2, N2 and O2 follows the order : N2 > O2 > H2

The ionic nature of KCl, MgCl2 and AlCl3 follows the order KCl > MgCl2 > AlCl3

In CsCl lattice, each Cs is surrounded by 8Cl– ions.

answer is A.

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Detailed Solution

⇒ Central atom in PF3 is - sp3 hybridised ,where as central atom in ClF3, XeF2 undergoes sp3d hybridisation.∴ 1st option is incorrect.2) N2B.O 3 >O22>H21⇒ correctIonic Nature : →KCl >MgCl2 >AlCl3 →K+ Mg+2 Al+3As the positive charge of cation increasespolarising power of cation increases& hence distortion of Cl- anion increases∴ Sharing of electrons increasesHence covalent character increases & ionic character decreases→ Co-ordination number of Cs in CsCl lattice is 8⇒ Correct

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