How many electrons can be held in the first energy level? In the second energy level?

Step 1: Define the Problem

Identify how many electrons can be held in the first and second energy levels of an atom.

Step 2: Break Down the Problem

1. Determine the electron capacity of the first energy level.
2. Determine the electron capacity of the second energy level.

Step 3: Apply Relevant Concepts

• The maximum number of electrons in an energy level is determined by the formula $2n^2$, where $n$ is the principal quantum number (energy level).

Step 4: Analysis, Verify and Summarize

1. First Energy Level ($n = 1$): $2n^2 = 2(1)^2 = 2$ The first energy level can hold a maximum of 2 electrons.

2. Second Energy Level ($n = 2$): $2n^2 = 2(2)^2 = 8$ The second energy level can hold a maximum of 8 electrons.

Final Answer

• The first energy level can hold 2 electrons.
• The second energy level can hold 8 electrons.