8
QuizMultiple Choice

The Earth's Surface — Test

Question 8 • Earth and Space Science

Why does the oxygen atom in water molecules face the Na raised to the plus power ion?

Answer
A
Oxygen has a partial negative charge that is attracted to Na raised to the plus power .
B
Water forms covalent bonds with ions.
C
Oxygen is heavier than hydrogen.
D
The hydrogen atoms in water are repelled by the Na raised to the plus power ions.

Explanation

In a water molecule, oxygen attracts the shared electrons more strongly than hydrogen does, so oxygen has a partial negative charge. Opposite charges attract, so the oxygen end of the water molecule faces the positively charged Na⁺ ion. The correct choice is “Oxygen has a partial negative charge that is attracted to Na⁺.”

AI-written and checked against the verified answer.

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