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katrin2010 [14]
3 years ago
7

Which of the following statements could be true regarding polar molecules? Choose one or more: A polar molecule will not contain

polar bonds. A polar molecule may have one or more lone pairs. A polar molecule has an uneven distribution of electron density. The bond dipoles in a polar molecule will cancel. A polar molecule will never contain nonpolar bonds.
Chemistry
1 answer:
makvit [3.9K]3 years ago
3 0

Answer:

A polar molecule may have one or more lone pairs.

A polar molecule has an uneven distribution of electron density.

Explanation:

A molecule in which the dipole bonds will not cancel is a polar molecule. It depends on the geometry of the molecule, and the direction of the dipole. So, to be polar, the molecule must have at least one polar bond. It may have nonpolar bonds, but the total dipole must be different from 0.

A polar bond is formed between elements that have large differents in electronegativities, such as chlorine and hydrogen. When an atom has a large electronegativity, it has lone pairs of electrons in a bond because it has a small size and a great number of electrons in the valence shell. So, a polar molecule may have on or more lone pairs.

Because of the lone pairs presented, and because of the dipole different from 0, it will be partial charges in the atoms, so a polar molecule has an uneven distribution of electrons density.

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