The Structure of the Atom Answers

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A nitride ion has 7 protons, 8 neutrons, and 10 electrons. What is the overall charge on this ion?

A
–3
B
–2
C
0
D
+3
2
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In which of these statements are protons, electrons, and neutrons correctly compared?

A
Quarks are present in protons and neutrons but not in electrons.
B
Quarks are present in protons, neutrons, and electrons.
C
Quarks are present in neutrons and electrons but not in protons.
D
Quarks are present in protons and electrons but not in neutrons.
3

An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass?

A
the neutron and the electron
B
the proton and the electron
C
the proton and the neutron
D
the neutron and the atom
4

A lithium atom has three protons, three neutrons, and three electrons. What is the overall charge on this atom?

A
–3
B
0
C
+1
D
+3
5

Boron occurs naturally as two isotopes. What is the difference between these isotopes?

A
They have different numbers of electrons and different charges.
B
They have different numbers of neutrons and different charges.
C
They have different numbers of protons and different mass numbers.
D
They have different numbers of neutrons and different mass numbers.
6

The table below gives some characteristics of element Y.Characteristics of element YValuesMass number11Number of neutrons in a single atom6Average atomic mass (grams/mole)10.81What is the identity of element Y?

A
C
B
B
C
Na
D
S
7

An atom of element Be has four protons, four electrons, and five neutrons. Which element below could be an isotope of this atom?

A
sodium-10
B
beryllium-10
C
boron-9
D
carbon-9
8

A particle that travels around the nucleus of an atom in orbitals is called a(n)

A
quark.
B
proton.
C
neutron.
D
electron.
9

The mass number of Fe2+ is 56. How many neutrons are there in a single Fe2+ atom?

A
28
B
30
C
56
D
58
10

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.

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