A : Catenation property of phosphorous is more than Nitrogen
R : Bond energy of N – N is less than P - P

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(A) is true but (R) is false

(A) is false but (R) is true

Both (A) & (R) are true (R) is the correct explanation of (A)

Both (A) & (R) are true (R) is not the correct explanation of (A)

answer is A.

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Detailed Solution

The single N--N bond is weaker than the single P--P bond due to high interelectronic repulsion of the non-bonding electrons in N₂, owing to small bond length. Therefore, the catenation property is weaker in nitrogen as compared to phosphorus.

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