In which of the following species the bonds are non-directional? — Chemical Bonding Chemistry Question

💡 Solution & Explanation

Step 1: Recall that ionic bonds are non-directional because the electrostatic attraction between oppositely charged ions acts uniformly in all 3D directions. Covalent bonds are directional due to the specific orientation of overlapping atomic orbitals. Step 2: Among the choices, RbCl is a highly ionic alkali metal halide salt composed of Rb^+ and Cl^- ions, whereas NCl3, BeCl2, and BCl3 are covalent molecules. Step 3: Therefore, RbCl has non-directional bonds, matching option (b).