Question

Pcl5 exists but ncl5 does not exist because

Answer 1

Explanation:

Phosphorus can form PCl5 since it has vacant d-orbitals in its valence shell. NCl5 is not possible because of no vacant d-orbitalS

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Answer 2

Explanation:

PCl5 forms five bonds by using the d-orbitals to "expand the octet" and have more "places" to put bonding pairs of electrons. NCl5 does not exist because there are no d-orbitals in the second energy level. Therefore there is no way to arrange five pairs of bonding electrons around a nitrogen atom

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