How Do Water Molecules Form, and What Factors Create Water's

question 9

Multiple Choice

How do water molecules form, and what factors create water's hydrogen bond?

• A) Each of two hydrogen atoms donates its electron to an oxygen atom to fill its outer shell. This forms two hydrogen anions and one oxygen cation. The larger oxygen cation attracts the two hydrogen anions, forming two attachments called hydrogen bonds and creating the neutral water molecule.
• B) Two hydrogen atoms covalently bond to an oxygen atom. This forms a water molecule that is weakly positive on the hydrogen side and weakly negative on the oxygen side. These opposing charges form a mild attachment to other water molecules called a hydrogen bond.
• C) The single electron on the shell of a hydrogen atom bonds covalently to another hydrogen atom to complete both outer shells. This H₂ molecule now has two weakly positive ends, which attract a weakly negative oxygen atom. This attachment is the hydrogen bond and forms the water molecule.
• D) The electrons of two hydrogen atoms form ionic bonds with an oxygen atom, forming a water molecule with four free electrons on the oxygen side. The hydrogen side has a strong positive charge because the single protons are no longer countered by their electrons. The oxygen side is negatively charged because it now has more electrons than protons. The positively charged hydrogen side of one water molecule attracts the negatively charged oxygen side of another water molecule. Each hydrogen atom forms a weak attachment with two of an oxygen atom's remaining electrons. These are the hydrogen bonds.

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