Identify the correct statements from the following. (1) The dipole moment of CO ₂ and BF ₃ is zero. (2) The dipole moment of NF ₃ is higher than the dipole moment of NH ₃ . (3) The dipole moment of HI is lower than the dipole moment of HCl .

Step-by-step solution

1 . The BF ₃ molecule has a symmetrical trigonal planar geometry, the moment of any two B-F dipoles is equal in magnitude but opposite in direction to the moment of the BF ₃ molecule is zero. Same as CO ₂ . 2. In NH ₃, ~N is more electronegative than H so, N pulls the electrons from H towards itself so, the direction of moment due to the N - H bonds is in the same direction as that of the lone pair of electrons on nitrogen. But in case of NF ₃, H - [Ione pair] moment is in the opposite direction to the N - F bond m