What is the principal quantum number of an electron in the 4s orbital?

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Question: What is the principal quantum number of an electron in the 4s orbital?

Options:

Correct Answer: 4

Solution:

The principal quantum number (n) indicates the energy level of an electron. For the 4s orbital, n = 4.

What is the principal quantum number of an electron in the 4s orbital?

What is the principal quantum number of an electron in the 4s orbital?

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 orbital we are looking at, which is the 4s orbital.
Step 3: The number before the letter 's' in '4s' is the principal quantum number.
Step 4: Therefore, for the 4s orbital, the principal quantum number (n) is 4.

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