Question

Some non-polar substances can be liquid at room temperature, its explanation is given by which of the following?
A.The molecules form bonds by sharing electrons
B.Temporary dipoles with partial charges are formed by the molecules
C.The molecules form ions with opposite charges by transferring electrons
D.The molecules form positive ions that are held together by free electrons
E.The molecules form temporary bonds between hydrogen and electronegative atoms

Answer 1

Hint: Non-polar molecule occurs when polar bonds in a larger molecule cancel each other out or when the electrons are shared equally between the atoms of a diatomic molecule. For e.g. we have \[{C_6}{H_6}\] generally called benzene. This is a liquid at room temperature. Benzene contains carbon to carbon and carbon to hydrogen covalent bonds only. None of these bonds are polarized.

Complete step by step answer:
Non polar substances are the substances without a dipole, meaning that it has an equitable distribution of electrons in its molecular structure. Some of the examples of Non-polar substances are Gasoline, Teflon, Styrofoam, cooking oil, Crisco, margarine, motor oil, polyethylene, candle wax etc.
Some non-polar substances can be liquids at room temperature, its explanation is given by the statement (B). Stronger intermolecular forces require more energy to separate them from each other. The molecular geometry and bond polarities both play critical roles in determining whether or not a molecule is polar. A polar molecule has a net dipole moment, which means that there is an uneven distribution of electrons across the entire molecular structure. The temporary dipoles with partial charges are formed by the molecules and the intermolecular forces of attraction are developed between these temporary dipole molecules which results in the liquid state of the substances.

Therefore, the correct answer is option (B).

Note: Non-polar compounds do not dissolve in water but however, the non-polar molecules are more attracted to themselves than they are to the polar water molecules. When a nonpolar liquid such as oil is mixed with water, then two separate layers form because the liquids will not dissolve into each other.