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MHT CET202020 Oct 2020Evening ShiftChemistryStructure of AtomActual

Which among the following elements possesses one electron in 4 s orbital in observed electronic configaration?

Options

  1. AV ( Z =23)
  2. BNi ( Z =28)
  3. CMn ( Z =25)
  4. DCu ( Z =29)

Correct answer

D. Cu ( Z =29)

Step-by-step solution

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

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