The distribution of electrons into different orbits of an atom :
1= The maximum number of electrons present in a shell is given by the formula 2n square .

Electron Distribution in Different Orbits (Shells)

In an atom, electrons are distributed in different orbits or shells around the nucleus. These shells are also known as energy levels or electron shells. Each shell can hold a specific number of electrons, and the distribution of electrons in these shells follows certain rules and patterns.

1. Shell Capacity:
Each shell has a maximum capacity or limit to the number of electrons it can hold. The capacity of each shell can be determined by the formula 2n^2, where 'n' represents the shell number. For example, the first shell (n=1) can hold a maximum of 2 electrons, the second shell (n=2) can hold a maximum of 8 electrons, and so on.

2. Filling Order:
Electrons fill the shells in a particular order, following the Aufbau principle, which states that electrons occupy the lowest energy levels first. This means that the innermost shell is filled before moving to the next shell.

3. Shell Distribution:
The distribution of electrons in different shells can be understood using the following key points:

a. First Shell (K-shell):
The first shell, also known as the K-shell, is closest to the nucleus. It can hold a maximum of 2 electrons. The K-shell is always filled first before any other shell.

b. Second Shell (L-shell):
The second shell, also known as the L-shell, is the next energy level after the K-shell. It can hold a maximum of 8 electrons. After the K-shell is filled, the remaining electrons start filling the L-shell.

c. Third Shell (M-shell):
The third shell, also known as the M-shell, is the next energy level after the L-shell. It can hold a maximum of 18 electrons. After the L-shell is filled, the remaining electrons start filling the M-shell.

d. Fourth Shell (N-shell):
The fourth shell, also known as the N-shell, is the next energy level after the M-shell. It can hold a maximum of 32 electrons. After the M-shell is filled, the remaining electrons start filling the N-shell.

4. Electron Configuration:
The distribution of electrons in different shells can be represented using electron configuration notation. For example, the electron configuration of helium (He) is 1s^2, where '1s' represents the first shell (K-shell) and '^2' represents the number of electrons in that shell.

5. Valence Electrons:
The electrons in the outermost shell of an atom are called valence electrons. These electrons have the highest energy and are involved in chemical bonding and interactions with other atoms.

Conclusion:
In summary, electrons are distributed in different orbits or shells around the nucleus of an atom. Each shell has a maximum capacity, and electrons fill the shells following the Aufbau principle. The innermost shell (K-shell) is filled first, followed by the next shells (L-shell, M-shell, N-shell, etc.). The electron distribution can be represented using electron configuration notation, and the electrons in the outermost shell are called valence electrons.