We’re being asked to**determine the number of orbitals**contained in the**third major level (n = 3)**.

You are watching: How many orbitals are contained in the third principal level (n=3) of a given atom?

Recall the the** quantum numbers**that specify an electron are:

•*Principal Quantum Number***(n)**: encounters thesize and also energy the the atomic orbital.

Thepossible values for nare**1 to ∞**.

•*Angular momentum Quantum Number***(l)**: deals with theshape of the atom orbital.

Thepossible worths for lare**0 come (n – 1)**.

•*Magnetic Quantum Number***(ml)**: encounters theorientation the the atom orbitalin 3D space.

Thepossible worths for mlare the variety of l:**–l come +l**.

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Problem Details

How numerous orbitals are included in the 3rd principal level (n=3) of a offered atom?

A) 7

B) 5

C) 9

D) 3

E) 18

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