Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.
Then, how many electrons are in the 4th energy level?
Similarly, how many electrons are in the 5th energy level? 2 electrons
Simply so, how are electrons found in the energy levels?
Summary. Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found. As you go farther from the nucleus, electrons at higher energy levels have more energy. The maximum number of electrons at a given energy level depends on its number of orbitals.
Why can't electrons exist in between energy levels?
When an electron is hit by electricity, it can gain energy and can be bumped up to a higher energy orbit further away from the nucleus. On the other hand, when an electron loses energy, it falls back down to a lower energy orbit closer to the nucleus. The electron can never exist at distances in between allowed orbits.