Practice Filling Of Orbitals In Atom (2.6.4) - Structure of Atom

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6 sample questions

Question 1.
What is the Aufbau principle?
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Think about how you would fill a series of levels.
Question 2.
How many electrons can occupy an orbital?
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Consider Pauli's Exclusion Principle.
3Question 3.
What is the rule that states no two electrons in the same atom can have identical quantum numbers?
- Hund's Rule
- Aufbau Principle
- Pauli Exclusion Principle
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Think about how electrons are arranged in orbitals.
4Question 4.
True or False: According to Hund's Rule, electrons will pair up in degenerate orbitals before each orbital is singly filled.
- True
- False
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Consider the arrangement of electrons in orbitals.
Question 5.
If an atom has 20 electrons, what would be its electron configuration?
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Use the rules to fill orbitals according to their increasing energy levels.
Question 6.
Explain why copper (Cu) has an electron configuration of [Ar] 3d10 4s1 instead of the expected 3d9 4s2.
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Think about the stability associated with filled and half-filled subshells.

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