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WorksheetsUnstable Nuclei
Total questions: 8
Worksheet time: 4mins
The graph of neutron number against proton number shows three nuclei P, Q and R.
Which of the following identifies an isotope of P and the nucleon number of this isotope of P?
Isotope of P: Q
Nucleon number of isotope of P: y + 1
Isotope of P: Q
Nucleon number of isotope of P: x + y + 1
Isotope of P: R
Nucleon number of isotope of P: x + y + 1
Isotope of P: R
Nucleon number of isotope of P: x + 1
23692U undergoes a series of decays to produce 20482Pb
How many alpha decays are involved in this decay series?
5
6
8
10
An iodine nucleus decays into a nucleus of Xe−131, a beta-minus particle and particle Y.
Which is a property of particle Y?
It has a lepton number of +1
It is an antiparticle
It is negatively charged
It experiences the strong interaction
When a nucleus of the radioactive isotope 6528Ni decays, a β– particle and an electron antineutrino are emitted.
How many protons and neutrons are there in the resulting daughter nucleus?
Number of protons: 28
Number of neutrons: 65
Number of protons: 29
Number of neutrons: 65
Number of protons: 29
Number of neutrons: 36
Number of protons: 30
Number of neutrons: 35
23290Th is an unstable nuclide in a radioactive decay series. It decays by emitting an α particle. The next two nuclides in the series emit β− particles.
What nuclide is formed after these three decays have taken place?
Which sequence of radioactive emissions results in the formation of an isotope of the original element?
one α particle and one β− particle
one α particle and two β− particles
two α particles and one β− particle
two α particles and two β− particles
A radioactive nucleus emits a β–. particle then an α particle and finally another β–. particle. The final nuclide is
an isotope of the original element
the same element with a different proton number
a new element of higher proton number
a new element of lower nucleon number
A nucleus of a particular element decays, emitting a series of α and β− particles.
Which of the following series of emissions would result in an isotope of the original element?
1 α and 1 β−
1 α and 2 β−
2 α and 1 β−
2 α and 2 β−
