Do `NH_(3)` and `BF_(3)` have same shape ?

Why NH_(3) and BF_(3) have different shapes?

The bond that exists between NH_(3) and BF_(3) is called

NH_(3) and BF_(3) form adduct readily because they form :

NH_(3) and BF_(3) from adduct readily because they from

NH_(3)and BF_(3) from adduct readily because they from

Which of the following pairs is isostructural (i.e having the same shape and hybridization ? [NF_(3) " and " BF_(3)] [BF_(4)^(-) and NH_(4)^(+)]

The nature of bond between NH_(3) and BF_(3) is