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2.1 Atomic structure

2.1 Atomic structure

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Question 1

Iron is a transition metal with an atomic number of 26.

What is the ground-state electronic configuration of the iron(II) ion, Fe2+\text{Fe}^{2+}Fe2+?

A

1s22s22p63s23p63d44s21s^2 2s^2 2p^6 3s^2 3p^6 3d^4 4s^21s22s22p63s23p63d44s2

B

1s22s22p63s23p63d61s^2 2s^2 2p^6 3s^2 3p^6 3d^61s22s22p63s23p63d6

C

1s22s22p63s23p63d54s11s^2 2s^2 2p^6 3s^2 3p^6 3d^5 4s^11s22s22p63s23p63d54s1

D

1s22s22p63s23p63d64s21s^2 2s^2 2p^6 3s^2 3p^6 3d^6 4s^21s22s22p63s23p63d64s2

Markscheme

2.1 Atomic structure Questions

  1. GCSE
  2. /Chemistry
  3. /2.1 Atomic structure

87 exam-style questions on Edexcel GCSE Chemistry 2.1 Atomic structure, covering 2.1.1 Development of the atomic model, 2.1.2 Structure of the atom and subatomic particles, 2.1.3 Mass number, isotopes and relative atomic mass, and 2.1.4 Calculating relative atomic mass from isotopic abundance. Each one has a worked solution and a mark scheme showing where the marks go.

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