Question
Why does $\text{BF}^{3-}_6$ not exist but $\text{AlF}^{3-}_6$ exist?

Answer

It is because 'B' does not have vacant d-orbitals whereas as Al has d-orbitals of form $\text{AlF}^{3-}_6.$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free