Question

what is the general trend for electron affinity values going across a period? the values become more negative. the values become more positive. the values stay relatively constant. the values show no trend.

Explanation:

As we move across a period from left - to - right, the nuclear charge increases while the shielding effect remains relatively constant. This leads to a greater attraction for an added electron, making the electron affinity values more negative (more energy is released when an electron is added).

Answer:

The values become more negative.