Consideing the water molecule, the statement A) is not true because pure water is composed of covalent bonds.
The water molecule is made up of two hydrogen atoms and one oxygen atoms joined by a covalent bond. That is, the two hydrogen atoms and the oxygen atoms are joined by sharing electrons.
Since oxygen is more electronegative than hydrogen, electrons, which have a negative charge, are more likely to be closer to the oxygen atom than to the hydrogen atom, which causes each hydrogen atom to have a certain positive charge called a positive partial charge, and that of oxygen, a negative one, since it has the electrons closer together. This means that water is a polar molecule, as it has a negative part or pole and a positive one.
When two water molecules are very close to each other, an attraction is established between the oxygen of one of the molecules, which has a negative partial charge, and one of the hydrogens of the other molecule, which has a positive partial charge. This type of interaction is called a hydrogen bond.
So, the statement A) is not true because pure water is composed of covalent bonds.
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