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The total number of atomic orbitals in a given shell is determined by the formula n². If n equals 4, how many atomic orbitals are present in the fourth shell?

1. 16
2. 12
3. 10
4. 8

Correct answer: 16

Solution

The total number of atomic orbitals in a shell is given by n², where n is the principal quantum number. For n = 4, the total number of orbitals is 4² = 16.

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