객관식
Which of the following best describes the charge of an electron?
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2. Atoms & Elements
The Atom
Multiple Choice
How many electrons are present in a neutral atom of carbon?
A
12
B
6
C
8
D
4
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검증된 단계별 안내1
Recall that a neutral atom has an equal number of protons and electrons.
Identify the atomic number of carbon, which represents the number of protons in the nucleus. For carbon, the atomic number is 6.
Since the atom is neutral, the number of electrons must be equal to the number of protons.
Therefore, the number of electrons in a neutral carbon atom is equal to its atomic number, which is 6.
Conclude that a neutral carbon atom contains 6 electrons.
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