CAIE IGCSE Physics 5.1.2.7 Relationship Between the Proton Number Questions

Learn to identify particle charge and compare neutral atom structures.

Exam points

identify electrons, protons and neutrons in atomic structure diagrams
state and compare the relative charges of atomic particles
use neutrality and particle counts to interpret atomic diagrams

[Maximum number: 1]

The notation represents the nucleus of a gold atom.

\section*{197 \\ ${ }_{9}^{7} \mathrm{Au}$ }

The relative charge on a proton is +1 .
What is the relative charge on the gold nucleus?

+79

+118

+197

+276

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CAIE IGCSE Physics 5.1.2.7 Relationship Between the Proton Number Questions question 1