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- 1. Multiple Choice
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
- 2. Multiple Choice
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
- 3. Multiple Choice
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
- 4. Multiple Choice
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
- 5. Multiple Choice
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
- 6. Multiple Choice
Which of the following nuclei has the smallest specific charge?
- 7. Multiple Choice
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
- 8. Multiple Choice
Which nucleus has a smaller value of specific charge than the nucleus 188O?
- 9. Multiple Choice
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
- 10. Multiple Choice
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
- 11. Multiple Choice
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
- 12. Multiple ChoiceWhat do these isotopes of carbon all have in common?neutrons & mass numberatomic number and neutronsatomic number and electronsprotons, atomic number, and mass number
- 13. Multiple ChoiceHow many neutrons does the isotope of lithium have?8345
- 14. Multiple ChoiceHow many protons does this isotope of titanium have?48222670
- 15. Multiple ChoiceWhat quantities vary between isotopes of an element?protons, electrons, and atomic massprotons, electrons, and atomic numberneutrons and electronsneutrons and atomic mass
- 16. Multiple Choicewhich atom has 4 neutrons?Li-6Li-7Li-8they have the same # of neutrons
- 17. Multiple ChoiceHow many neutrons in C-14?67148
- 18. Multiple ChoiceHow many neutrons does an atom of the isotope Neon-22 have?12102220
- 19. Multiple ChoiceFour isotopes of lead include lead-204, lead-206, lead-207, and lead-208. The average atomic mass of lead is 207.2. Which isotope of lead is likely to be the most abundant.204206207208
- 20. Multiple ChoiceTwo isotopes of carbon are carbon-12 and carbon-14. These isotopes differ from one another by two protons.truefalse
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