In which of the following molecules are all the bonds not equal?

Step-by-step solution

In ClF ₃ , the chlorine atom is s p^3 d hybridised. So, the bonds are not equal and have trigonal-bipyramidal geometry. BF ₃ and AlF ₃ show a trigonal symmetric structure because of s p^2 hybridisation. NF ₃ shows pyramidal geometry because of s p^3 hybridisation.