Question

Why is one side of a single water molecule partially negative while the other side is partially positive?
a. Electron pairs are unevenly shared between the oxygen atom and the two hydrogen atoms.
b. Hydrogen donates its electrons to oxygen.
c. Oxygen donates its electrons to hydrogen.
d. Electron pairs are unevenly shared between the two hydrogen atoms.

Answer 1

Answer:

The correct option are the A.

Explanation:

The molecular of water has a covalent bond. Like Oxygen is more electronegative than hydrogen, the electrons are closer Oxygen than Hydrogen. Therefore electrons pairs are unevenly shared between the Oxygen atom and the two hydrogen atoms.

The options B and C are incorrect because only in ionic bond an element donates your electrons. The option D is incorrect because the two hydrogen atoms don´t share electrons.      

Answer 2

Water is partially negative on one part, while the other side is partially positive because electron pairs are unevenly shared between the oxygen atom and the two hydrogen atoms (Option a).

• A water (H2O) molecule is composed of two hydrogen (H) atoms that covalently bond to an oxygen (O) atom.

• In a covalent bond between oxygen (O) and hydrogen (H) atoms, Oxygen attracts electrons more strongly than the atoms of hydrogen, thereby generating differences in charges.

• In consequence, the H2O molecule is partially negative near its oxygen atom, while it is partially positive near its hydrogen atoms.

In conclusion, water is partially negative on one part, while the other side is partially positive because electron pairs are unevenly shared between the oxygen atom and the two hydrogen atoms (Option a).

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