how many electrons are found in the electron cloud of an atom whose K,L and M shells are full?

K: 2

L: 8
M:18

To determine the number of electrons in an atom with full K, L, and M shells, we need to calculate the maximum number of electrons each shell can hold.

The K shell can hold a maximum of 2 electrons.

The L shell can hold a maximum of 8 electrons.

The M shell can also hold a maximum of 8 electrons.

To find the total number of electrons, we add up the maximum number of electrons each shell can hold.

2 (K shell) + 8 (L shell) + 8 (M shell) = 18 electrons.

Therefore, an atom with full K, L, and M shells will have 18 electrons in its electron cloud.

To determine the number of electrons in an atom with full K, L, and M shells, we need to know the maximum number of electrons that each shell can hold.

The maximum number of electrons in each shell is determined by a formula: 2n^2, where n represents the shell number starting from 1.

Let's calculate the maximum number of electrons for each shell:
- K shell (n=1): 2 x 1^2 = 2 electrons
- L shell (n=2): 2 x 2^2 = 8 electrons
- M shell (n=3): 2 x 3^2 = 18 electrons

Now, we can add up the maximum number of electrons in the K, L, and M shells to find the total number of electrons in an atom with full shells:

2 electrons (K shell) + 8 electrons (L shell) + 18 electrons (M shell)
= 28 electrons

Therefore, in an atom with full K, L, and M shells, there are 28 electrons in the electron cloud.