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10 questions from this quiz
Lowest energy levels first
4s4s4s
1s21s^21s2 2s22s^22s2 2p62p^62p6
[Ar] 4s14s^14s1
Groups 1 and 2
Electrons occupy orbitals singly first
No two electrons in same orbital can have same spin
[Ar] 4s14s^14s1 3d53d^53d5
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