Question

which pattern in electronegativity do elements in the periodic table display? (1 point)
electronegativity is highest on the left and right sides of the periodic table, and lowest in the middle of a row.
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.

Explanation:

Electronegativity is the ability of an atom to attract electrons in a chemical bond. Across a period (row) of the periodic table, the number of protons in the nucleus increases while the shielding effect of inner - shell electrons remains relatively constant. This leads to a greater effective nuclear charge, making it easier for the atom to attract electrons, so electronegativity increases from left to right within a row.

Answer:

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