Question

how many electrons can the second energy level hold? 18 2 8 32

Explanation:

The formula to calculate the number of electrons in an energy level is $2n^{2}$, where $n$ is the energy - level number. For the second energy level, $n = 2$. Substituting $n = 2$ into the formula gives $2\times2^{2}=2\times4 = 8$.

Answer:

8