Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
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Account for the Following : Nitrogen Does Not Form Pentahalide. - Chemistry

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Account for the following : Nitrogen does not form pentahalide.

Give reasons:Nitrogen does not form pentahalide. 

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Solution 1

Group 15 elements form pentahalides when they have empty d-orbitals, which can be used for forming coordinate bonds. Since nitrogen does not have d-orbitals, it cannot form petahalides.

Solution 2

Nitrogen belongs to second period. Thus, it has only s- and p- orbitals available for bonding. Due to the absence of d-orbitals in nitrogen it cannot expand its covalency upto 5. It can have covalency maximum upto 4, like in the case of ammonium ion NH4+ (by donating all the lone pair of electrons). Thus, nitrogen does not form pentahalides.

Concept: P - Block Group 15 Elements - Dinitrogen
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