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1.2 The periodic table

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Question 12
F

Knowledge of isotopes helped scientists to explain a problem with the early periodic tables. Which problem did it explain?

[1]
A

Why some of the elements had not been discovered when the tables were made

B

Why the order based on atomic weights was not always the correct order

C

Why the elements in each column had similar chemical properties to each other

D

Why the noble gases had not been included anywhere in the early tables

Markscheme

1.2 The periodic table Questions

  1. GCSE
  2. /Chemistry
  3. /1.2 The periodic table

40 exam-style questions on AQA GCSE Chemistry 1.2 The periodic table, covering 1.2.1 The periodic table, 1.2.2 Development of the periodic table, 1.2.3 Metals and non-metals, 1.2.4 Group 0, 1.2.5 Group 1, and 1.2.6 Group 7. Each one has a worked solution and a mark scheme showing where the marks go.

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