Question

Draw the structure of ${\mathrm{BF}}_3$.

Answer 1

Boron Trifluoride$\left({\mathrm{BF}}_3\right)$:

• Electronic configuration of Boron: ${}_5 \mathrm{B}\to 1{\mathrm{s}}^2,2{\mathrm{s}}^2,2{\mathrm{p}}^1$
• Electronic Configuration of Fluorine: ${}_9{}^{ }\mathrm{F}\to 1{\mathrm{s}}^2,2{\mathrm{s}}^2,2{\mathrm{p}}^5$
• In the excited state,the configuration of Boron is:
• Fluorine pairs with the 3 valence electron and forms ${\mathrm{sp}}^2$ hybridized bond.
• In the structure of ${\mathrm{BF}}_3$ the central atom $\mathrm{B}$ has total 6 electrons in valence so the compound is hypovalent compound.

• The geometry of Boron trifluoride is Trigonal planar.