Question

The periodic table . Highest IE elements
​

Answer 1

Answer:

Helium is the element with the highest ionization energy.

It is a noble gas with a full octet and is stable. It requires a large amount of energy to remove an electron from helium atom.

The valence electrons in He are in K shell which lies very close to the nucleus of the atom. Therefore, it requires more energy to remove an electron

from K shell than any other shell.

Was this answer helpful

Answer 2

Answer:

Ionization energy refers to the amount of energy needed to remove an electron from an atom. Ionization energy decreases as we go down a group. Ionization energy increases from left to right across the periodic table.

Explanation:

Mark as brainlies answer provide thanks