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How many protons are present in an atom with an atomic number of 23 and a mass number of 51?
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The Atom
Multiple Choice
How many protons are present in a neutral atom of manganese?
A
24
B
25
C
26
D
12
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검증된 단계별 안내1
Recall that the number of protons in a neutral atom is equal to the atomic number of the element.
Identify the element given in the problem, which is manganese.
Look up the atomic number of manganese on the periodic table; this number represents the number of protons.
Understand that in a neutral atom, the number of protons equals the number of electrons, but the question only asks for protons.
Conclude that the number of protons in a neutral manganese atom is the atomic number of manganese.
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