The Structure of the Atom Answers
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An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass?
A
the neutron and the electronB
the proton and the electronC
the proton and the neutronD
the neutron and the atom2
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Carbon-12 and carbon-13 are isotopes of carbon. Which of the following statements is correct?
A
They both have seven protons in the nucleus.B
They both have the same mass number.C
They both have seven neutrons in the nucleus.D
They both have the same atomic number.3
The diagram below shows some subatomic particles.What is the particle that is labeled with a question mark (?) in the diagram?
A
beta particleB
quarkC
isotopeD
alpha particle4
A nitride ion has 7 protons, 8 neutrons, and 10 electrons. What is the overall charge on this ion?
A
–3B
–2C
0D
+35
A lithium atom has three protons, three neutrons, and three electrons. What is the overall charge on this atom?
A
–3B
0C
+1D
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