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WorksheetsP.3.2.1.1 Constituents of the atom
Total questions: 17
Worksheet time: 9mins
The graph of neutron number against proton number shows three nuclei P, Q and R.
Which row 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
The decay of a neutral kaon K0 is given by the equation
K0 → X + Y + v̅e
What are X and Y?
e+ and e–
μ+ and e–
π+ and e–
π– and e+
Fluoride ions are produced by the addition of a single electron to an atom of fluorine 199F
What is the magnitude of specific charge of the fluoride ion?
3.2 × 10–26 C kg–1
8.4 × 10–21 C kg–1
5.0 × 106 C kg–1
4.5 × 107 C kg–1
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: 28
Number of neutrons: 36
Number of protons: 30
Number of neutrons: 35
An atom of 167N gains 3 electrons.
What is the specific charge of the ion?
1.80 × 107 C kg–1
–1.80 × 107 C kg–1
4.19 × 107 C kg–1
–4.19 × 107 C kg–1
Electrons moving in a beam have the same de Broglie wavelength as protons in a separate beam moving at a speed of 2.8 × 104 m s–1.
What is the speed of the electrons?
1.5 × 101 m s–1
2.8 × 104 m s–1
1.2 × 106 m s–1
5.1 × 107 m s–1
The composition of a carbon dioxide (CO2) molecule is one atom of 126C and two atoms of 168O.
What is the number of molecules of CO2 in 2.2 kg of the gas?
1.0 × 1022
3.0 × 1022
3.0 × 1025
4.7 × 1025
The radius of a nucleus of the iron nuclide 5627Fe is 4.35 × 10–15 m.
What is the radius of a nucleus of the uranium nuclide 23892U?
2.69 × 10–15 m
2.89 × 10–15 m
6.55 × 10–15 m
7.05 × 10–15 m
Which of the following nuclei has the smallest specific charge?
What is the best estimate for the order of magnitude for the diameter of an atom?
10−14 m
10−12 m
10−11 m
10−8 m
Which nucleus has a smaller value of specific charge than the nucleus 188O?
When bombarded with an α particle the nuclide 2512Mg changes into another nuclide with the emission of a neutron and γ radiation.
What are the correct values for the nucleon number and proton number of the nuclide which is formed?
Nucleon number: 29
Proton number: 14
Nucleon number: 29
Proton number: 12
Nucleon number: 28
Proton number: 14
Nucleon number: 27
Proton number: 12
What are the numbers of hadrons, baryons and mesons in an atom of 73Li?
hadrons: 7
baryons: 3
mesons: 3
hadrons: 7
baryons: 4
mesons: 4
hadrons: 7
baryons: 7
mesons: 0
hadrons: 10
baryons: 7
mesons: 0
A calcium ion is formed by removing two electrons from an atom of 4020Ca . What is the specific charge of the calcium ion?
3.2 × 10–19 C kg–1
2.9 × 10–18 C kg–1
4.8 × 106 C kg–1
4.8 × 107 C kg–1
The nucleus of 94Be captures a proton and emits an α particle. What is the product nucleus?
A positive ion has a charge−to−mass ratio of 2.40 × 107 C kg–1. It is held stationary in a vertical electric field.
Which line, A to D, in the table shows correctly both the strength and the direction of the electric field?
Electric field strength / V m–1: 4.09 × 10–7
Direction: upwards
Electric field strength / V m–1: 4.09 × 10–7
Direction: downwards
Electric field strength / V m–1: 2.45 × 106
Direction: upwards
Electric field strength / V m–1: 2.45 × 106
Direction: downwards
In a nuclear reaction 147N is bombarded by neutrons. This results in the capture of one neutron and the emission of one proton by one nucleus of 147N. The resulting nucleus is
