Multiple Choice
Which of the following is the correct electron configuration for a neutral iron (Fe) atom?
2
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10. Periodic Properties of the Elements
The Electron Configuration
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
How many electrons can an atom have in its first electron shell (n = 1)?
A
6
B
8
C
2
D
4
Verified step by step guidance1
Understand that the first electron shell corresponds to the principal quantum number $n = 1$.
Recall that the number of electrons a shell can hold is given by the formula $2n^2$, where $n$ is the principal quantum number.
Substitute $n = 1$ into the formula: $2 \times (1)^2 = 2$.
Interpret this result to mean that the first shell can hold a maximum of 2 electrons.
Therefore, the correct answer is that the first electron shell can have 2 electrons.
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