Multiple choice

Which of the following matches of element and its electronic configuration is not correct?

  1. Ta: [Xe] 4f14 5d3 6s2

  2. W: [Xe] 4f14 5d5 6s1

  3. Os: [Xe] 4f14 5d6 6s2

  4. Pt: [Xe] 4f14 5d8 6s2

  5. Au: [Xe] 4f14 5d10 6s1

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

Correct answer. Given electronic configuration of tungsten is incorrect. Correct electronic configuration of tungsten (74W) is [Xe] 4f14 5d4 6s2.