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1.2 Atomic structure

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Question 14
H

A helium atom contains 2 protons, 2 neutrons and 2 electrons.

Use the approximate relative masses of protons, neutrons and electrons.

How many times greater is the mass of the nucleus than the total mass of the electrons in the atom?

[1]
A

2

B

2000

C

4000

D

8000

Markscheme

1.2 Atomic structure Questions

  1. GCSE
  2. /Chemistry
  3. /1.2 Atomic structure

51 exam-style questions on OCR GCSE Chemistry 1.2 Atomic structure, covering 1.2.1 Development of the atomic model, 1.2.2 The nuclear model and the size of atoms, and 1.2.3 Subatomic particles in atoms and ions. Each one has a worked solution and a mark scheme showing where the marks go.

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