NEET Chemistry The p-Block Elements (XII) Questions Solved

An element (X) forms compounds of the formula XCl3, X2O5 and Ca3X2,but does not form XCl3. Which of the following is the element

(A) B

(B) Al

(C) N

(D) P

N forms NCl3, N2O5 and Ca3N2 . Nitrogen, due to no empty d- orbitals, cannot extend its covalency by more than three and hence do not form NCl5.Due to its small size and high electronegativity it can accept 3 electrons to form N3- ion (Ca3N2)

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