Unit 3 Section 3 Practice: Electron Configurations

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc
• Copper
• Nickel
• Germanium

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What electron configuration matches an oxygen atom?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵
• 1s²2s²2p⁴
• 1s²2s²2p⁶
• 1s²2s²2p⁶3s²3p⁶4s²3d¹

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What is the electron configuration of Sulfur using noble gas method

• [Ne]3s¹

• [Ne]3s²3p³

• [Ne]3s²3p⁴

• [Ne]3s⁶

Electrons will not pair up in a subshell until all other subshells (orientations) are full. This describes which theory of the quantum atomic model?

• Hund’s Rule

• Aufbau Principle

• Pauli Exclusion Principle

• Heisenberg's Uncertainty Principle

What is the noble gas configuration for phosphorus?

• [Ar] 3p⁵
• [He] 3s² 3p⁵
• [Ne] 3s² 3p³
• [Na] 3s² 3p⁵
  

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According to the Aufbau Principle, which sublevel should starting filling with electrons directly before the 3p sublevel?

• 3s

• 2p

• 4s

• 4p

Which is associated with more energy? 

• 2p
• 2s
• 3p
• 1s

This orbital diagram represents:  

• C
• B
• N
• O

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 The diagram above represents two electrons with 

• a. opposite spins.
•  b. the same spin.
• c. different energies.
• d. different energy levels.

Which example shows a violation of Hund's Rule?

• A

• B

• C

• D

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