Question

Specify the coordination geometry around and hybridisation of N and B atoms in a 1 : 1 complex of $BF_3$ and $NH_3$.

• A. N : tetrahedral, ${sp}^3$ ; B: tetrahedral, ${sp}^3$
• B. N : pyramidal, ${sp}^3$; B: pyramidal, ${sp}^3$
• C. N: pyramidal, ${sp}^3$; B: planar, ${sp}^2$
• D. N: pyramidal, ${sp}^3$; B: tetrahedral, ${sp}^3$

Answer 1

Answer: (A)

N : tetrahedral, ${sp}^3$ ; B: tetrahedral, ${sp}^3$

Answer 2

Both -B- and -N- ${sp}^3$ tetrahedral.