Question

how many electrons can the first energy level hold?

Explanation:

Step1: Electron capacity formula

The formula for the maximum number of electrons an energy level can hold is \(2n^{2}\), where \(n\) is the principal quantum number of the energy level.

Step2: Substitute \(n = 1\)

For the first energy level, \(n = 1\). Substituting into the formula: \(2\times(1)^{2}=2\times1 = 2\).

Answer:

A. 2