Question

which characteristic best explains the difference in melting behavior of covalent substances and ionic substances? ionic substances have weaker intermolecular attractions ionic substances usually have stronger atomic bonds. covalent substances have weaker intermolecular attractions. covalent substances usually have stronger atomic bonds.

Explanation:

Ionic substances have strong ionic bonds between ions, while covalent substances often have weaker intermolecular forces like van - der - Waals forces or hydrogen bonds (in some cases). Stronger forces require more energy to break, which affects melting behavior. Covalent substances having weaker intermolecular attractions is a key factor in their melting behavior differences compared to ionic substances.

Answer:

C. Covalent substances have weaker intermolecular attractions.