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2.1 Atomic structure

2.1 Atomic structure

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Question 31

A sodium atom has the atomic number 11 and the mass number 23. Which row shows the correct list of subatomic particles present in a sodium ion, Na+\text{Na}^+Na+?

A

protons: 11, neutrons: 12, electrons: 11

B

protons: 11, neutrons: 12, electrons: 10

C

protons: 12, neutrons: 11, electrons: 10

D

protons: 11, neutrons: 12, electrons: 12

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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