CH-1203
Structure and properties
Chemistry · Secondary 4 · Medium · Structure and properties
Which statement explains why potassium chloride has a lower melting point than calcium oxide?
- The attraction between K⁺ and Cl⁻ is weaker than that between Ca²⁺ and O²⁻.
- Potassium metal is less dense than calcium metal.
- The bonding in potassium chloride is covalent while it is ionic in calcium oxide.
- The boiling point of potassium chloride is higher than that of calcium oxide.
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