16. The table shows the chemical formulas and melting points for four compounds. What types of bonds formed in each of these compounds, and how does the melting point data support this conclusion?
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CH4 and H2O must have ionic bonds because they have high melting points, whereas MgCl2 and NaBr must have covalent bonds because they have low melting points.
CH4 and H2O must have ionic bonds because they have low melting points, whereas MgCl2 and NaBr must have covalent bonds because they have high melting points.
CH4 and H2O must have covalent bonds because they have low melting points, whereas MgCl2 and NaBr must have ionic bonds because they have high melting points.
CH4 and H2O must have covalent bonds because they have high melting points, whereas MgCl2 and NaBr must have ionic bonds because they have low melting points.