Which metal has the most negative electron affinity and why?

Shouldn't it be positive meaning it requires energy to add an electron to the atom? Doesnt the added electron destabilize the atom because the added electron would repell the electron in the s-orbital? Please explain in details as possible.

Which of the following elements has the most negative electron affinity? S Si P Se

electron affinity increases across a row and decreases across a column . some answers says that it is because to the attraction of the nucleus between the valence electrons when the atomic size increases this attraction is weaker so it is easier to add...

Electron affinity is the amount of energy released when an electron is added to an atom. Electron affinity increases from left to right in a period and decreases down the ...show more

Which correctly correlates first ionization energy (IE1) and electron affinity (EA)? A. equal in magnitude but opposite in sign B. as IE1 grows larger and more positive, EA grows larger and more negative C. as IE1 grows larger and more positive, EA grows...

Of the following elements, __________ has the most negative electron affinity. Br Se Cl S I

Based on the actual electron configurations of the elements, explain why the electron affinity of carbon is greater than that of nitrogen.

I need this information for a Chemistry course, and I understand electron affinity for every element except hafnium.