Quantum Numbers Electron Configuration

Multiple Choice

Which among the following shows an excited state?

• 1

• 2

• 3

• 4

Multiple Choice

What is the value of n in the 2s orbital?

• 1

• 2

• 3

• 0

Multiple Choice

What is n for an electron in the 3d sublevel?

• 1

• 2

• 3

• 0

Multiple Choice

In the configuration 1s² 2s² 2p⁶, what is the n value for the p electrons?

• 1

• 2

• 3

• 4

Multiple Choice

What is the l value of an electron in the 1s orbital?

• 1

• 2

• 3

• 0

Multiple Choice

Determine l for an electron in the 3d orbital.

• 1

• 2

• 3

• 0

Multiple Choice

What is the value of l for an electron in the 2p orbital?

• 1

• 2

• 3

• 0

Multiple Choice

What are the possible ml values if l = 1?

• +1, 0, +1

• -1, 0, +1

• -2, -1, 0, +1, +2

• 0 only

Multiple Choice

If an electron has l = 2, list all possible ml values.

• -2 to +2

• -1, 0, +1

• -3 to +3

• -2, -1, 0, +1, +2

Multiple Choice

What is one valid ml value for an electron in the 3d orbital?

• 0

• +3

• -3

• +4

Multiple Choice

Give one ml value for an electron in the 4p orbital.

• +3

• +2

• -1

• -2

Multiple Choice

What is the correct electron configuration of calcium (Ca, atomic number 20)?

• 1s² 2s² 2p⁶ 3s² 3p⁴ 4s²

• 1s² 2s² 2p⁶ 3s² 4s²

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

• 1s² 2s² 2p⁶ 3s²

Multiple Choice

Which of the following elements has the electron configuration:
1s² 2s² 2p⁶ 3s² 3p⁵?

• Oxygen (O)

• Sulfur (S)

• Fluorine (F)

• Chlorine (Cl)

Multiple Choice

What is the correct electron configuration of sulfur (S, atomic number 16)?

• 1s² 2s² 2p⁶ 3s² 3p³

• 1s² 2s² 2p⁶ 3s² 3p⁴

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2s² 2p⁶ 3s² 3d⁴

Multiple Choice

What are the quantum numbers for the last electron of aluminum (Al, atomic number 13)?

• (3, 1, 0, -½)

• (3, 1, -1, +½)

• (3, 0, 0, -½)

• (3, 1, +1, -½)

Multiple Choice

What are the quantum numbers for the last electron of fluorine (F, atomic number 9)?

• (2, 1, 0, +½)

• (2, 1, 1, -½)

• (2, 1, 0, -½)

• (2, 0, 0, -½)

IDENTIFY THE ELEMENT

1. (2, 1, 0, -½)

2. (3, 0, 0, +½)

3. (3, 2, -2, +½)

Multiple Choice

Which element has a last electron with the quantum numbers (3, 1, -1, -½)?

• Silicon (Si)

• Chlorine (Cl)

• Sulfur (S)

• Phosphorus (P)

Multiple Choice

Which element has a last electron with the quantum numbers (4, 0, 0, +½)?

• Calcium (Ca)

• Potassium (K)

• Scandium (Sc)

• Sulfur (S)