Chem Dude's rules

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Last updated 3:25 AM on 9/12/26
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8 Terms

1
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what is Aufbau principle?

fill from LOWER energy → HIGHER energy

2
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What is the order of Aufbau principle?

1s→2s→2p→3s→3p→4s→3d→4p

3
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Pauli exclusion principle

Maximum 2 electrons per orbital, and they must have opposite spins.

4
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Hund's rule

Put one electron in each orbital before pairing them.

5
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How many orbitals in s

1

6
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How many orbitals in p

3

7
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How many orbitals in d

5

8
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How many orbitals in f

7