Electron affinity is most exothermic (most negative ΔE) for which group?
- A
Group 18 (noble gases)
- B
Group 2 (alkaline earth)
- C
Group 1 (alkali metals)
- Dcheck_circle
Group 17 (halogens)
Explanation
Halogens are one electron short of a stable noble-gas configuration; gaining an electron releases the most energy.