ATOMS AND RADIOACTIVITY
2 marks · Easy(a)[1 mark]
In the radioactive decay process, which subatomic particle is emitted during beta decay?
(b)[1 mark]
State the change in atomic number of the nucleus after beta decay.
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Show answer
(a) Electron (beta particle) · must show Accept beta particle, beta-minus, electron
(b) Increases by 1 · must show Accept: goes up by 1, increases by one
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Marking points
B1 (a) · 1 mark · States electron (beta particle) is emitted.
B1 (b) · 1 mark · States atomic number increases by 1.
Worked solution
a) Electron (beta particle) b) Atomic number increases by 1