Question

electronegativity __________ from left to right within a period and __________ from top to bottom within a group stays the same, increases increases, increases decreases, increases increases, decreases

Explanation:

Electronegativity is a measure of an atom's ability to attract electrons in a chemical bond. In a period (row) of the periodic table, as we move from left to right, the number of protons in the nucleus increases, and the atomic radius decreases. This results in a stronger attraction for electrons, so electronegativity increases. In a group (column), as we move from top to bottom, the atomic radius increases due to the addition of electron shells. The increased distance from the nucleus and shielding effect reduce the nucleus's attraction for electrons, so electronegativity decreases.

Answer:

increases, decreases