AnswersCR03101 ChemistryUnit Test

Balancing Nuclear Reactions Answers

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Which represents the balanced nuclear equation for the beta minus decay of Co-60?

A
Superscript 60 subscript 27 upper C o right arrow superscript 60 subscript 26 upper F e plus superscript 0 subscript plus 1 e.
Option A
B
Superscript 60 subscript 27 upper C o right arrow superscript 60 subscript 28 upper N i plus superscript 0 subscript negative 1 e.
Option B
C
Superscript 60 subscript 27 upper C o plus superscript 0 subscript plus 1 e right arrow superscript 60 subscript 28 upper N i.
Option C
D
Superscript 60 subscript 27 upper C o plus superscript 0 subscript negative 1 e right arrow superscript 60 subscript 26 upper Fe.
Option D
2
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A radioactive nuclide that is used to label blood platelets has 49 protons and 62 neutrons. Which is the symbol of this nuclide?

A
Superscript 49 subscript 62 upper I n.
Option A
B
Superscript 62 subscript 49 upper I n.
Option B
C
Superscript 49 subscript 111 upper I n.
Option C
D
Superscript 111 subscript 49 upper I n.
Option D
3

Which numbers are shown in the symbol for a radioactive nuclide?

A
the atomic number and the number of neutrons
B
the mass number and the number of neutrons
C
the atomic number and the mass number
D
the number of electrons and the number of protons
4

The symbol for a radioactive nuclide is . Which statement is correct?

Question illustration
A
The atomic number of the radioactive nuclide is 75.
B
The mass number of the radioactive nuclide is 131.
C
The number of neutrons that are present in the nucleus of each atom is 56.
D
The number of protons that are present in the nucleus of each atom is 131.
5

A radioactive nuclide is used to detect eye tumors. An atom of this radionuclide contains 15 protons, 15 electrons, and 17 neutrons. Which is symbol of this radionuclide?

A
Superscript 32 subscript 17 upper P
Option A
B
Superscript 17 subscript 15 upper P.
Option B
C
Superscript 30 subscript 15 upper P.
Option C
D
Superscript 32 subscript 15 upper P.
Option D
6

The mass number of an isotope of uranium is 238, and its atomic number is 92. Which symbol best represents this isotope of uranium?

A
Subscript 92 upper U.
Option A
B
Superscript 238 subscript 92 upper U.
Option B
C
Superscript 92 subscript 238 upper U.
Option C
D
Superscript 92 upper U.
Option D
7

A certain radionuclide is used to diagnose lymphoma. An atom of this radionuclide contains 31 protons and 36 neutrons. Which statement is correct about the radionuclide?

A
The atomic number is 31, the mass number is 67, and its symbol is .
Option A
B
The atomic number is 31, the mass number is 67, and its symbol is .
Option B
C
The atomic number is 67, the mass number is 31, and its symbol is .
Option C
D
The atomic number is 67, the mass number is 31, and its symbol is .
Option D
8

Consider the nuclear equation below.Which correctly identifies the type of reaction?

Question illustration
A
alpha decay
B
beta plus decay
C
beta minus decay
D
gamma decay
9

The table lists the number of protons, electrons, and neutrons in a certain radioactive nuclide.ElectronsProtonsNeutrons111113Which is the symbol of this radioactive nuclide?

A
Superscript 24 subscript 11 upper N a.
Option A
B
Superscript 22 subscript 11 upper N a.
Option B
C
Superscript 13 subscript 11 upper Al.
Option C
D
Superscript 24 subscript 13 upper A l.
Option D
10

Which represents the balanced equation for the beta minus emission of phosphorus-32?

A
Superscript 32 subscript 15 upper P right arrow superscript 28 subscript 13 upper A l plus superscript 4 subscript 2 upper H e.
Option A
B
Superscript 32 subscript 15 upper P right arrow superscript 32 subscript 14 upper S i plus superscript 0 subscript negative 1 e.
Option B
C
Superscript 32 subscript 15 upper P right arrow superscript 32 subscript 16 upper S plus superscript 0 subscript negative 1 e.
Option C
D
Superscript 32 subscript 15 upper P right arrow superscript 32 subscript 14 upper S i plus superscript 0 subscript plus 1 e.
Option D

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