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2.1 Atomic structure

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Question 14
F

Which pair of atoms contains the same number of neutrons?

(atomic numbers: C = 6, N = 7, O = 8, Ar = 18, Ca = 20)

[1]
A

carbon-14 and nitrogen-14

B

carbon-12 and carbon-13

C

argon-40 and calcium-40

D

carbon-14 and oxygen-16

Markscheme

2.1 Atomic structure Questions

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

46 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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