Calculate the hybridisation of `BF_(3)`

BF_(3) is

How many sigma & pi bonds are there in propene molecule. State the hybridisation of the central atom, CH_4 , BeCl_2 BF_3 , NH_3 .

What is the hybridisation of BF_3 and NH_3 .

Explain the formation of the following molecules using hybridisation : BF_3 .

Is there any change in the hybridisation of B and N atoms as a result of the following reaction? BF_(3)+NH_(3) to F_(3)B*NH_(3)

Is there any changes in the hybridisation of B and N atoms as a result of the following reaction BF_3+NH_3rarrF_3B.NH_3