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10 SECTION B – Module C4 4

This question is about atomic structure. (a) An atom of chlorine can be represented as: 35 17

Cl

Complete the following sentence. This atom of chlorine contains ............. protons, 17 electrons and ............. neutrons.

[2]

(b) Complete the table about the particles found in atoms. Particle

Relative electric charge

Relative mass

Electron

........................

0.0005

Neutron

........................

1

Proton

+1

........................ [2] [Total: 4]

Š OCR 2013

C4 question 4  
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