Final answer:
Electronegativity is the ability of an atom to attract electrons in a bond. It increases from left to right across a period and decreases down a group in the periodic table.
Explanation:
Electronegativity is a measure of an atom's ability to attract electrons in a chemical bond. In the periodic table, electronegativity generally increases from left to right across a period and decreases down a group. For example, fluorine has the highest electronegativity of all elements.
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