CAIE IGCSE Physics 5.1.2 The Nucleus Topic Practice

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Question 1

[Maximum number: 1]

The charge on a proton is e.
What is the charge on an electron and what is the charge on a neutron?

electron

neutron

e

e

e

0

-e

-e

-e

0

Question 2

[Maximum number: 1]

The notation represents the nucleus of a gold atom.

\section*{197 \\ 97Au{ }_{9}^{7} \mathrm{Au}}

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

A

+79

B

+118

C

+197

D

+276

Question 3

[Maximum number: 1]

The diagrams show the simple atomic structure for two neutral atoms X and Y of different elements.

X

X

Y

Y

Which row is correct?

atom with
more electrons

atom with a more
positively charged nucleus

X

X

X

Y

Y

X

Y

Y

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