Polarization

[805601399]

Could someone please explain the concept of polarizability?

[cecilia1F]

Hello,
Polarization, as I understand it, refers to the fact that in covalent bonds the electrons are not being shared equally. This happens when one of the atoms has a larger electronegativity than the other it is in a bond with. This means that the bond will have a partial negative and partial positive end.

[Molly Smith 1J]

A molecule is polar if one atom is significantly more electronegative than another atom in the molecule. Electronegativity means how much an atom wants to attract electrons and hold onto its existing electrons. So, a highly electronegative atom will pull the other atoms electrons towards it, creating a partially negative charge around that atom due to the increase in electrons, and a partially positive charge around the other atom. In this way, an atom is "polarized" like a magnet that has a positive end and a negative end.

[Kati Rady-Pentek 1E]

A molecule being polar means that it has a region where electrons are more highly concentrated and a region where electrons are less highly concentrated. This is due to a bond forming between atoms with substantially differing electronegativities, and hence one atom tends to hog all of the electrons (becoming partially negative) while the other atom attracts less electrons (becoming partially positive).

[Hannah Carsey 1B]

Polarization is the separation of positive and negative charges in a nucleus, atom, molecule, or system. Polarity, in chemical bonding, is the distribution of electrical charge over the atoms joined by the bond. In hydrogen chloride, for example, the hydrogen atom is slightly positively charged whereas the chlorine atom is slightly negatively charged. Water (H2O) is polar because of the bent shape of the molecule. The shape means that most of the negative charge from the oxygen is on one side of the molecule and the positive charge of the hydrogen atoms is on the other side of the molecule. This is an example of polar covalent chemical bonding.

[Aneesha_Nema_3C]

Polarity essentially has to do with the electronegativity of the atom. A polar molecule must contain at least one polar bond, and a polar bond is one that is between 2 atoms that has an electronegativity difference between 0.5 and 1.7. If a bond is polar covalent, then the electron is still shared between the atoms but it would spend more time or stay closer to the more electronegative atom.

[Jessica Sun 2I]

Polarization is when electrons are not shared equally by the bonded atoms due to a significant difference in electronegativity. The electrons will be closer to the atom with higher electronegativity, creating a difference in charge. The electronegativity difference won't be large enough that the bond becomes ionic, however.