22. Which statement is TRUE about atoms?
A. The atomic number includes the neutrons.
B. All particles of an atom are located in its nucleus.
C. The mass of an atom is concentrated in its nucleus.
D. Both electrons and neutrons are found in the nucleus of an atom.
23. Which is the same as the mass number of an atom?
A. The sum of the numbers of protons and electrons,
B. The sum of the numbers of electrons and neutrons,
C. The sum of all the numbers of protons in the nucleus.
D. The sum of the numbers of protons and neutrons in the nucleus.
(Please answer properly)
A. The atomic number includes the neutrons.
B. All particles of an atom are located in its nucleus.
C. The mass of an atom is concentrated in its nucleus.
D. Both electrons and neutrons are found in the nucleus of an atom.
23. Which is the same as the mass number of an atom?
A. The sum of the numbers of protons and electrons,
B. The sum of the numbers of electrons and neutrons,
C. The sum of all the numbers of protons in the nucleus.
D. The sum of the numbers of protons and neutrons in the nucleus.
(Please answer properly)
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Answer:
22. D
23. A
Explanation:
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Answer:
22. A. The atomic number includes the neutrons.
23. D. The sum of the numbers of protons and neutrons in the nucleus.
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