Question

which one of these would have a high melting point? nacl nh₃ so₂ co₂

Explanation:

NaCl is an ionic compound. Ionic compounds have strong electrostatic forces (ionic bonds) between ions. These strong bonds require a large amount of energy to break, resulting in high melting points. In contrast, \(NH_3\), \(SO_2\), and \(CO_2\) are covalent compounds. They have relatively weak intermolecular forces (such as van der Waals forces and in the case of \(NH_3\), hydrogen - bonding which is stronger than typical van der Waals but still weaker than ionic bonds).

Answer:

NaCl