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