Of what is electronegativity an indication

Answer 1

Electronegativity is an indication of an atom's ability to attract and hold onto electrons in a chemical bond. It is a measure of the tendency of an atom to attract a shared pair of electrons towards itself. Electronegativity increases from left to right across a period in the periodic table, and decreases from top to bottom within a group. A higher electronegativity value indicates a stronger ability of an atom to attract electrons, leading to a more polar bond.