Practice Writing Electron Configurations (2.4)

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6 sample questions

Question 1.
What is the electron configuration for Sodium (Z = 11)?
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Think about how many electrons are in sodium.
Question 2.
Using noble gas notation, how would you write the configuration for chlorine (Z = 17)?
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Consider that chlorine is one step after neon in the periodic table.
3Question 3.
What is the electron configuration for a Neon atom?
- 1s² 2s² 2p⁶
- 1s² 2s²
- 1s² 2p⁴
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Think about the total number of electrons in Ne.
4Question 4.
True or False: The electron configuration for lithium is 1s² 2s¹.
- True
- False
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Recall the atomic number of lithium.
Question 5.
Write the complete electron configuration for Manganese (Mn, Z = 25) and indicate if any exceptions apply.
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Follow the Aufbau principle and use the periodic table.
Question 6.
For an unknown element X with the configuration [Kr] 5s² 4d¹⁰ 5p², what is its atomic number?
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Count the electrons represented in each part of the configuration.

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