Q4.1: Electron Configuration Quiz

What is the electron configuration of carbon?

• 1s2 2s2 2p4

• 1s2 2s1 2p3

• 1s2 2s1 2p2

• 1s2 2s2 2p2

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According to Hund's rule, how do electrons fill orbitals in a subshell?

• Electrons fill orbitals in a subshell by pairing up first

• Electrons fill orbitals in a subshell one at a time with parallel spins before pairing up.

• Electrons fill orbitals in a subshell all at once

• Electrons fill orbitals in a subshell in random order

Explain the Aufbau diagram and how it is used to determine electron configurations.

• The Aufbau diagram is used to determine the electron configurations by counting the number of protons in the nucleus.

• The Aufbau diagram is used to determine the electron configurations by following the filling order of the neutrons.

• The Aufbau diagram is used to determine the electron configurations by looking at the number of electrons in the outermost shell.

• The Aufbau diagram is used to determine the electron configurations by following the filling order of the orbitals.

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State the Pauli exclusion principle and its significance in electron configurations.

• The Pauli exclusion principle has no significance in electron configurations.

• The Pauli exclusion principle states that electrons in the same energy level can have the same set of quantum numbers.

• No two electrons in an atom can have the same set of four quantum numbers, leading to the organization of electrons in different energy levels and sublevels in electron configurations.

• The Pauli exclusion principle only applies to electrons in the same orbital.

What is the electron configuration of oxygen?

• 1s2 2s2 2p4

• 1s2 2s2 2p2

• 1s2 2s2 2p6

• 1s2 2s2 2p3

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NGSS.HS-PS1-1

The electron configuration of an atom is 1s²2s²2p⁶.  The number of electrons in the atom is 

• 3
• 6
• 8
• 10

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What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc
• Copper
• Nickel
• Germanium

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

The electron configuration of an atom is 1s²2s²2p⁶.  The number of valence electrons in the atom is 

• 3
• 6
• 8
• 10

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NGSS.HS-PS1-1

What is the electron configuration for this atom?

• 1s²2s²2p⁶
• 1s²2s²2p⁵
• 1s²2s²2p³
• 2s²2p³

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NGSS.HS-PS1-2

Which orbital is displayed correctly?

• A

• B

• C

• D

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