which is most likely true about electronegativity?\no it tends to be the same across a period.\no it tends…

Brief Explanations:

Electronegativity is the ability of an atom to attract electrons in a chemical bond. Across a period (from left - to - right), the number of protons increases and the atomic radius decreases, making the nucleus more effective at attracting electrons, so electronegativity increases. Down a group, the atomic radius increases and the outermost electrons are further from the nucleus, so electronegativity decreases.

Answer:

It tends to increase across a period.