Question

How many electrons have an azimuthal quantum number (l) with the value +1 in a fluorine atom?

a. zero
b. six
c. two
d. five
e. four

Answer 1

5

Step-by-step explanation:

F:1s²2s²2p₋₁²2p₀²2p₊₁¹

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QN's for each of nine Fluorine e⁻'s => values in 'bold' are the orbital (or, azimuthal) QN's with values = +1.

n l m mₓ

1s¹ 1 0 0 +1/2

1s² 1 0 0 -1/2

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2s¹ 1 0 0 +1/2

2s² 1 0 0 -1/2

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2p₋₁¹ 1 +1 -1 +1/2

2p₀¹ 1 +1 0 +1/2

2p₊₁¹ 1 +1 +1 +1/2

2p₋₁² 1 +1 -1 -1/2

2p₀² 1 +1 0 -1/2

2p₊₁ (empty orbital)

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