Question

The maximum number of electrons in any shell is calculated by the formula.

• A. $n^2$
• B. $2n^2$
• C. $n^2$+1

Answer 1

The correct option is B $2n^2$

The electrons revolve around the nucleus in specific orbits. The shells or orbits are called energy levels. The maximum number of electrons the $n$th shell of an element can accomodate is given by the formula $2n^2$, where $n$ is the energy level.