객관식
How many protons does a neutral sodium atom have?
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4. Atoms and Elements
Subatomic Particles (Simplified)
객관식
How many protons does a neutral carbon atom have?
A
6
B
12
C
8
D
4
검증된 단계별 안내1
Recall that the number of protons in an atom is equal to its atomic number, which uniquely identifies the element.
Identify the element in question, which is carbon in this problem.
Look up the atomic number of carbon on the periodic table; this number represents the number of protons in a neutral carbon atom.
Understand that a neutral atom has an equal number of protons and electrons, but the number of protons is fixed by the atomic number.
Conclude that the number of protons in a neutral carbon atom is the atomic number of carbon.
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