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Multiple choice

Identify the mismatched pair of element and its electronic configuration.

  1. Cu: [Ar] 3d10 4s1

  2. Ag: [Kr] 4d10 5s1

  3. Au: [Xe] 5d10 6s1

  4. Zn: [Ar] 3d10 4s2

  5. Pt: [Xe] 4f14 5d9 6s1

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

The correct electronic configuration of gold (79Au) is [Xe] 4f14 5d10 6s1.

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