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Which pattern in electronegativity do elements in the periodic table display?

Electronegativity increases from left to right within a row of the periodic table.

Electronegativity decreases from left to right within a row of the periodic table.

Electronegativity is lowest on the left and right sides of the periodic table, and highest in the middle of a row.

Electronegativity is highest on the left and right sides of the periodic table, and lowest in the middle of a row.