Chemistry 9701 · AS & A Level · The Periodic Table: chemical periodicity

The Periodic Table: chemical periodicity — practice question

An atom has the electronic configuration of its two outermost shells as $3s^2 3p^6 3d^5 4s^2$. Which atom is this?

  • Amanganese
  • Bphosphorus
  • Cstrontium
  • Dvanadium

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