AP BIOLOGY

Detailed explanation-1: -A bond in which the electronegativity difference between the atoms is between 0.5 and 2.0 is called a polar covalent bond. A polar covalent bond is a covalent bond in which the atoms have an unequal attraction for electrons and so the sharing is unequal.

Detailed explanation-2: -As shown above, the electrons in a covalent bond between two different atoms (H and Cl in this case) are not equally shared by the atoms. This is due to the electronegativity difference between the two atoms. The more electronegative atom (Cl) has greater share of the electrons than the less electronegative atom (H).

Detailed explanation-3: -Water is a Polar Covalent Molecule The unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule means that a water molecule has two poles-a positive charge on the hydrogen pole (side) and a negative charge on the oxygen pole (side).

Detailed explanation-4: -A bond in which electrons are shared unevenly is known as a polar bond. Much like the poles on a mini magnet, the atoms connected by a polar bond become positive and negative poles.

Detailed explanation-5: -Answer and Explanation: Polarity is what results from the unequal sharing of electrons between atoms.