Nitrogen exists as diatomic molecule and...

Nitrogen exists as diatomic molecule and phosphorus as `P_(4)`. Why ?

Text Solution

Verified by Experts

Nitrogen because of its small size and high electronegativity forms `p pi - p pi`-multiple bonds. Therefore, it exists as a diatomic molecule having a triple bond between the two N-atoms. Phosphorus, on the other hand, due to its large size and lower electronegativity usually does not form `p pi - p pi` multiple bonds with itself. Instead it prefers to form P-P single bonds and hence it exists as tetrahedral `P_(4)` molecules.

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Explain why nitrogen exists as a diatomic molecule and phosphorus at P_(4) molecule.

Nitrogen exists as diatomic molecule (N_(2)) while phosphorus as tetra-atomic molecule (P_(4)) . Why ?

Knowledge Check

A diatomic molecules has

A

1 degree of freedom

B

3 degrees of freedom

C

5 degree of freedom

D

6 degrees of freedom

Assertion : Elemental nitrogen exist as a diatomic molecule and phospours as tetratomic molecule. Reason :Nitrogen does not have vacant d-orbital wheras phosphorus have vacant d-orbital.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

White phosphorus (P_(4)) has

A

six P-P single bonds

B

four P-P single bonds

C

four lone pairs of electrons

D

P-P-P angle of `60^(@)`

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White phosphorus (P_(4)) has

White phosphorus (P_(4)) has.

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