Atomic orbitals and electronic configurations

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10 Terms

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Number of electrons in s sub shell

2 (1×2)

2
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Number of electrons in p sub shell

6 (2×3)

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Number of electrons in d sub shell

10 (5×2)

4
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Number of electrons in f sub shell

14 (7×2)

5
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Order of subshells

1s → 2s → 2p → 3s → 3p → 4s → 3d → 4p

  • important: 4s fills up before 3d

6
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Cr electron configuration

1s2, 2s2, 2p6, 3s2, 3p6, 4s1, 3d5

7
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Cu electron configuration

1s2, 2s2, 2p6, 3s2, 3p6, 4s1, 3d10

8
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Spin diagrams

Detailed way of representing electron configuration.

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Box in spin diagram

Represents orbitals

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Half arrows

Shows direction electron is spinning inside the quantum shell