Question

When will be total energy of an electron in an atom will be maximum?

Answer 1

Answer:

attain the state of ... The maximum number of electrons accommodated in K shell (1st orbit) will be ... Therefore, the total number of shells required = 2.

Answer 2

$\mathfrak{\large{\underline{\underline{Answer :}}}}$

Negative sign before the energy has a physical significance which tells us that the electron is bound to nucleus unlike the electron which is free having zero interaction energy.