Question

which element have highest ionization energy?​

Answer 1

Answer:

The first ionization energy varies in a predictable way across the periodic table. The ionization energy decreases from top to bottom in groups, and increases from left to right across a period. Thus, helium has the largest first ionization energy, while francium has one of the lowest.

Answer 2

helium have the highest ionization energy

keep asking ❤❤