Question

describe the structure of a water molecule

Answer 1

In a water molecule, two seperate Hydrogens are polar covalently bonded to an Oxygen. The molecule is polar because of the high electronegativety of the Oxygen which strongly attracts electrons

Answer 2

Here is a drawing to help out:



The oxygen has two lone pairs of electrons opposite of the covalent bonds to the hydrogen atom causing this molecule to be polar.

Answer 3

Very nice! HOH angle is around 107 degrees. The molecule is best described as "bent" the arrangement of electron pairs around the central oxygen is described as tetrahedral;

Answer 4

The bond angle form HOH should be around 109.5 [theoretically]. The oxygen has a higher electronegative value than the hydrogen, so the oxygen would pull the electrons closer to itself. The electron density of the sigma covalent bond of the oxygen-hydrogen would be slightly undistributed. Ultimately, the hydrogen is slightly positive and the oxygen is slightly negatively charged, and forms hydrogen bonds [1 kcal/mol]. The structure of the molecule is polar and is tetrahedral as Preetha stated.