AP BIOLOGY

Detailed explanation-1: -Each water molecule can form two hydrogen bonds involving their hydrogen atoms plus two further hydrogen bonds utilizing the hydrogen atoms attached to neighboring water molecules. These four hydrogen bonds optimally arrange themselves tetrahedrally around each water molecule as found in ordinary ice (see right).

Detailed explanation-2: -Opposites attract, so this lopsided charge difference allows bonds to form between the hydrogen and oxygen atoms of adjacent H2O molecules. Each H2O can bind to a maximum of four neighbors through these so-called hydrogen bonds.

Detailed explanation-3: -It has a sp3 hybridization. Here, the two hydrogen bonds are formed by the two hydrogen atoms and the two lone pairs of electrons present on the oxygen atom attract other hydrogen atoms which can form hydrogen bonds. Thereby, the water molecule can form four hydrogen bonds.

Detailed explanation-4: -There can be maximum of 4 hydrogen bonds in which a water molecule can participate.

Detailed explanation-5: -Atoms join together to form molecules. A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom. That’s why water is sometimes referred to as H2O.