Question 6
What shape does a water molecule take in space?
The right answer is the one marked above.
Angular. The oxygen atom sits at the vertex with the two hydrogen atoms below it, because the two lone pairs on the oxygen push the bonds closer together.
A straight molecule would place the oxygen between two hydrogens in a line, and its two ends would then cancel out — water would not be polar and would behave completely differently. Square and triangular do not describe a three-atom molecule.