Practice Aufbau Order Diagram (2.5.1) - Unit 2: Atomic Structure - IB 11 Chemistry

Practice: Aufbau Order Diagram

Lesson 2.5.1Unit 2: Atomic Structure

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8 questions

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6 sample questions

Question 1.
What is the general order of filling electron orbitals based on the Aufbau principle?
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Try to remember it like counting stairs; start from the first step.
Question 2.
What is the atypical electron configuration of chromium?
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Remember it’s more stable with a half-filled d subsystem.
3Question 3.
Which of the following describes the Aufbau principle?
- Electrons fill from highest to lowest energy.
- Electrons fill from lowest to highest energy.
- Electrons fill randomly without a specific order.
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Think about the energy levels of orbitals.
4Question 4.
Does the Pauli Exclusion Principle allow two electrons in the same orbital?
- Yes
- No
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Consider how two items can share the same locker.
Question 5.
You are given the atomic number of copper (Z=29). Write its electron configuration and explain any anomalies.
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Think about why stability in d-subshells affects positioning.
Question 6.
Discuss how understanding the Aufbau principle can help predict the reactivity of elements.
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Consider the implications of full vs. partially filled outer shells.

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