In the chemical symbol ZXA , the A number is
A) the number of protons and neutrons.
B) the number of protons and electrons.
C) the number of protons minus the number of electrons.
D) the number of neutrons minus the number of protons.
Correct Answer:
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A)an accurately measured
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A)an
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A)Benzene
B)Ethene
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D)Methane
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