Water, H₂O, and Methane, CH₄, Have About the Same Mass

question 47

Multiple Choice

Water, H₂O, and methane, CH₄, have about the same mass and differ by only one type of atom. Why is the boiling point of water so much higher than that of methane?

• A)The water molecule is less symmetrical than is the methane molecule.
• B)The oxygen of a water molecule has two lone pairs of electrons.
• C)The electronegativity difference between oxygen and hydrogen is greater than the electronegativity difference between carbon and hydrogen.
• D)all of the above

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