Question

Maximum number of electrons that may be placed in the third shell n=3

Answer 1

18 electrons

Explanations

Shells of an element are denoted using letters K, L, M N, O, P... The expression for calculating the number of electrons in the shell of an element is expressed as:

`e=2n^2`

where:

n is the number of shells

Given the following parameters:

n = 3

Substitute the given value of "n" into the formula to have:

`\begin{gathered} e=2(3)^2 \\ e=2(9) \\ e=18 \end{gathered}`

Hence the maximum number of electrons that may be placed in the third shell is 18 electrons