Question

identify the type of hybridization and geometry in bef3​

Answer 1

if it is BF3 then it is sp2

How to find which hybridisation??

first see the number of valence electrons of the central atom. Here the central atom is boron and the number of valence electrons are 3.

then see to how many that atom is bonded to boron is bonded to 3 Flourine

the formula is.

no of bonded atoms + no of valence electrons left

thus the answer is = 3+0=3

sp - 2

sp2 -3

sp3- 4

sp3d- 5

sp3d2-6

Answer 2

One of the three boron electrons are unpaired in the ground state (config: 1s2 2s2 2p1). In the excited state, one electron from the 2s orbital jumps to the 2p orbital, and then the three 2p orbitals and one 2s orbital mix among themselves, giving rise to four sp2 hybridized orbitals, one of which is unused in BF3