Question

what are antipenultimate energy level​

Answer 1

Explanation:

the Outermost Shell. • The shell immediately inner to the Valence Shell is called the. Penultimate Shell. • The shell immediately inner to the Penultimate shell is called the Antepenultimate shell or level

Answer 2

ANTI-PENULTIMATE shell are the shells which are present inside of the PENULTIMATE shell

Here,

We need to know some terms like •PENULTIMATE and VALENCE shells.

* The shell which is FAR to the NUCLEUS called as VALENCE SHELL.

* The shell is ADJACENT(before) to the VALENCE SHELL called as PENULTIMATE SHELL.

•We need some ENERGY in order to REMOVE an ELECTRON from the outer most orbit.

That energy is known as IONISATION ENERY (or) IONISATION POTENTIAL.