Select the row of the table that describes the relative ionisation and relative penetration of nuclear radiations.
Most ionising | Most penetrating | |
A | α | α |
B | α | γ |
C | γ | α |
D | γ | γ |
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Select the row of the table that describes the relative ionisation and relative penetration of nuclear radiations.
Most ionising | Most penetrating | |
A | α | α |
B | α | γ |
C | γ | α |
D | γ | γ |
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A nucleus of protactinium, , decays by emitting an α particle.
The nucleus formed is
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A detector is placed 30 cm from a gamma source, the count rate is 64 counts per minute.
The detector is then placed 60 cm from the source.
The background rate is presumed to be a constant 24 counts per minute.
Which of the following gives the expected counts per minute?
16
32
34
44
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The radium isotope is unstable and undergoes a series of and emissions until a stable isotope of lead is formed.
Which of the following nuclear equations correctly shows the number of and emissions?
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