How many electrons can the first electron shell (n = 1) hold?

• A. 6
• B. 2
• C. 4
• D. 8

Answer: (B)

Verified step by step guidance

1. Recall that the maximum number of electrons in any electron shell is given by the formula \$2n^2\(, where \)n$ is the principal quantum number (shell number).
2. Identify the principal quantum number for the first electron shell, which is \(n = 1\).
3. Substitute \(n = 1\) into the formula: \$2 \times (1)^2$.
4. Calculate the value inside the parentheses first: \((1)^2 = 1\).
5. Multiply by 2 to find the maximum number of electrons: \$2 \times 1 = 2$ electrons.