Question

for the elements with the electron affinities given in the table in the introduction which elements is most likely to accept an electron Br, Sr, N : N = >0, Br = -325, St = -5

Answer 1

When an electron is added to an neutral atom (in gaseous state), the change in energy (energy released) is called the electron affinity of that element.

Among Br, N & Sr. oviously. Br is most likely to accept an electron because electron afffinity of bromine (Br) is very high beacause it can attain stable 4s²4p⁶ configuration by acceting an electron

Electron affinity of nitrogen (N) is lmuch lower than bromine.

Strontium (Sr) has electronic configuration Kr 5s2, so it's electron affinity will be very less.