객관식
How many protons are in a neutral sodium atom (Na)?
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4. Atoms and Elements
Subatomic Particles (Simplified)
객관식
How many protons are in an atom of sodium (Na)?
A
11
B
10
C
23
D
12
검증된 단계별 안내1
Recall that the number of protons in an atom is given by its atomic number, which is unique to each element.
Identify the element in question, which is sodium (Na).
Look up the atomic number of sodium on the periodic table; this number represents the number of protons.
Understand that the atomic number is the number of protons in the nucleus of the atom.
Conclude that the number of protons in sodium is equal to its atomic number.
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