Multiple Choice
In the context of subatomic particles, how many protons are in one atom of carbon (C)?
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4. Atoms and Elements
Subatomic Particles (Simplified)
Multiple Choice
How many protons are in a neutral sodium atom (Na)?
A
11
B
23
C
12
D
10
Verified step by step guidance1
Identify the element in question, which is sodium (Na). Each element is defined by its atomic number, which represents the number of protons in its nucleus.
Recall that the atomic number of sodium (Na) is 11. This number is unique to sodium and can be found on the periodic table.
Understand that in a neutral atom, the number of protons equals the number of electrons, but the question specifically asks for protons.
Therefore, the number of protons in a neutral sodium atom is equal to its atomic number, which is 11.
No further calculations are needed since the atomic number directly gives the number of protons.
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