What is the principal quantum number for an electron in the third energy level?

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Question: What is the principal quantum number for an electron in the third energy level? (2019)

Options:

Correct Answer: 3

Exam Year: 2019

Solution:

The principal quantum number (n) indicates the energy level; for the third energy level, n = 3.

What is the principal quantum number for an electron in the third energy level? (2019)

What is the principal quantum number for an electron in the third energy level? (2019)

Step 1: Understand what the principal quantum number (n) is. It tells us the energy level of an electron in an atom.
Step 2: Identify the energy level we are interested in. The question asks about the third energy level.
Step 3: Assign the principal quantum number to the third energy level. For the third energy level, n = 3.

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