p-Block elementsMedium
Question
An element (X) forms compounds of the formula XCl3, X2O5 and Ca3X2 but does not form XCl5. Which of the following is the element
Options
A.B
B.Al
C.N
D.P
Solution
N forms NCl3N2O and Ca3N2. Nitrogen due to absence of empty d-orbitals, cannot extent its covelency 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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