The shells are designated by letters, starting with the innermost shell labeled as "K," followed by "L," "M," "N," and so on as we move farther away from the nucleus. Each shell can hold a specific number of electrons. The maximum number of electrons that a shell can contain is determined by the formula 2n², where "n" is the number of the shell.
For example:
- The K shell (n = 1) can hold a maximum of 2(1)² = 2 electrons.
- The L shell (n = 2) can hold a maximum of 2(2)² = 8 electrons.
- The M shell (n = 3) can hold a maximum of 2(3)² = 18 electrons.
As we move to higher shells, the energy levels increase, and the electrons experience a weaker attraction to the nucleus. The filling of electron shells follows certain rules and patterns and determines the electronic configuration of atoms, which plays a crucial role in understanding their chemical properties and behavior.
