molecule polarity

Molecule Polarity Review

A bond is polar if:

the difference in electronegativity between the two atoms is at least 0.4 but less than 2.0.

The atoms in this situation are not equally sharing the electrons and the electron cloud is shifted toward one of the atoms.

The atom with the greater share of the electron cloud has a partial negative charge. The other atom has a partial positive charge.

Poll

Is the bond between carbon and oxygen a polar bond?

• yes

• no

A molecule is polar if:

at least one of the bonds is polar and the shifting of electrons is asymmetric.

Poll

Is carbon dioxide a polar molecule?

• yes

• no

Poll

Is the bond between nitrogen and hydrogen polar?

• yes

• no

Poll

Is ammonia a polar molecule?

• yes

• no