Practice Review Of Electron Configuration And Aufbau Principle (2.1) - Chapter 2: Atomic Structure & Periodicity

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6 sample questions

Question 1.
What is the Aufbau principle?
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Think about energy levels.
Question 2.
What maximum number of electrons can an s-orbital hold?
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Remember the 's' is the first letter in 'two'.
3Question 3.
What does the Aufbau principle state?
- Electrons fill higher energy orbitals first.
- Electrons fill lower energy orbitals first.
- Electrons fill orbitals randomly.
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Think about energy efficiency.
4Question 4.
True or False: According to the Pauli Exclusion Principle, two electrons can occupy the same orbital with the same spin.
- True
- False
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Consider the implications of sharing in a crowded space.
Question 5.
Describe the expected and actual electron configurations of copper (Cu). What is the significance of this difference?
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Consider stability when evaluating electron configurations.
Question 6.
Given an element with the electron configuration [Xe] 6s² 4f¹⁴ 5d⁹, identify the element and justify its placement in the periodic table.
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Check the periodic table for d-block positioning.

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