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5.1.2a Composition of the nucleus and isotopes

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Question 137

An atom of sodium contains 11 protons and 11 electrons. The nucleon number of the atom is 23.

How many neutrons are there in the atom?

A

11

B

12

C

23

D

34

Markscheme

5.1.2a Composition of the nucleus and isotopes Questions

  1. IGCSE
  2. /Physics
  3. /5.1.2a Composition of the nucleus and isotopes

170 exam-style questions on CIE IGCSE Physics 5.1.2a Composition of the nucleus and isotopes. Each one has a worked solution and a mark scheme showing where the marks go.

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