What three elements suggest that a molecule may be polar?

Answer 1

When determining the polarity of a molecule you need to consider the distribution of electric charge in the molecule.

To achieve this you need to:

- establish the spatial form of the molecule. [a completely simetric molecule will never be polar]

- know what atoms the molecule consists of

- determine the difference in electronegativity between the molecule's atoms.

In less complex molecules a big difference between atoms on different sides of the molecule will determine that it is polar, the higher the difference, higher the polarity.

For more details on this issue sign up to a chemistry course ina university near you,

cause this is defenently the shorter answer -

Hope I helped :>

Answer 2

An example of evidence that water molecules are polar is the fact that a thin stream of water is repeled by by a charged rod

P.S i did not see any suggested answers which is implied by the 'which of these'

Answer 3

The fact that ionic substances tend to dissolve in water is a big clue. Another one which is also great fun is the 'bending water' trick. You need a polythene rod and a fuzzy charging cloth, and a tap with a thin trickle of water coming from it. Charge up the rod then bring it near to the water stream,but not touching it, a few inches below the spout. You should be able to deflect the water stream so that it is pulled over towards the rod.

Answer 4

1. Presence of polar covalent bonds: If the molecule contains bonds with significantly different electronegativities, the electron distribution will be uneven, resulting in partial positive and negative charges.
2. Asymmetrical molecular shape: A molecule with an uneven distribution of atoms leading to different regions of partial positive and negative charges is likely to be polar.
3. Presence of lone pairs: Lone pairs on the central atom or atoms can also contribute to the polarity of a molecule by creating regions of higher electron density.

Answer 5

If oxygen, nitrogen, or phospherous are included in a molecule it is more than likely going to be polar.

Answer 6

The Molecule has a polar covalent bond and the dipole is established due to asymetrical arrangement of atoms