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2.2 The periodic table

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Question 13
F

Magnesium and sulfur are both in Period 3. Magnesium is a metal and sulfur is a non-metal.

Which statement explains this difference in terms of atomic structure?

[1]
A

Mg has 2 occupied shells, so it loses electrons to form positive ions; S has 6 occupied shells, so it gains electrons

B

Mg has fewer protons than S, so it gains electrons more easily to form positive ions; S forms negative ions

C

Mg has 2 outer-shell electrons and S has 6, so both lose their outer electrons to form positive ions

D

Mg has 2 outer-shell electrons, which it loses to form positive ions; S has 6, so it gains 2 to form negative ions

Markscheme

2.2 The periodic table Questions

  1. GCSE
  2. /Chemistry
  3. /2.2 The periodic table

50 exam-style questions on Edexcel GCSE Chemistry 2.2 The periodic table, covering 2.2.1 Mendeleev's periodic table, 2.2.2 Periods, groups, metals and non-metals, and 2.2.3 Electronic configuration and position in the periodic table. Each one has a worked solution and a mark scheme showing where the marks go.

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