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5.1.2a Composition of the nucleus and isotopes

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Question 141

Several isotopes of a chemical element exist.

Which row in the table correctly compares the numbers of particles in neutral atoms of these isotopes?

Number of protonsNumber of neutronsNumber of electronsAdifferentthe samedifferentBthe samedifferentthe sameCthe samedifferentdifferentDdifferentdifferentthe same \begin{array}{|c|c|c|c|} \hline & \text{Number of protons} & \text{Number of neutrons} & \text{Number of electrons} \\ \hline \text{A} & \text{different} & \text{the same} & \text{different} \\ \hline \text{B} & \text{the same} & \text{different} & \text{the same} \\ \hline \text{C} & \text{the same} & \text{different} & \text{different} \\ \hline \text{D} & \text{different} & \text{different} & \text{the same} \\ \hline \end{array} ABCD​Number of protonsdifferentthe samethe samedifferent​Number of neutronsthe samedifferentdifferentdifferent​Number of electronsdifferentthe samedifferentthe same​​
A

Row A

B

Row B

C

Row C

D

Row D

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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