Answer:
A molecule that is positively charged on one end and negatively charged on the other end is polar. The best example for this is water (H2O), you have H+ + OH-
Explanation:
Hydrocarbons are compounds at organic chemistry, with C and H, and they are nonpolar.
Nonpolar are substances that have the same charge in all the molecule. Basically it has no charge.
Radioactive are the elements that emit particles from the decay of an atomic nucleus.
