You are calling these a "group of" answer choices but what you have listed are not groups but single answer choices.
If we call a difference of 1.7 the 50-50 ionic/covalent bond for electronegativity (EN), then this is more ionic than covalent (delta EN = 1.9) so ionic is one, dipole-dipole is another. There are no H bonds. There are dispersion forces in anything but dispersion forces are weak so I wouldn't count those as predominate.
Identify the intermolecular force, or forces that predominate in Al2O3 (check all that apply)
Group of answer choices
1. ionic
2. H-bonding
3. dispersion
4. dipole dipole
1 answer
1 answer