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Multiple choice

Which of the following pairs of elements has completely filled 3d orbitals?

  1. Sc and Mn

  2. Cr and Cu

  3. Cu and Zn

  4. Cr and Mn

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cu: [Ar] 3d104s1 Zn: [Ar] 3d104s2

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