Multiple Choice
Which scientist is credited with the discovery of the atomic nucleus?
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2. Atoms & Elements
The Atom
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Which of the following is the number of protons in an atom of the element with atomic number 13?
A
13
B
6
C
26
D
14
Verified step by step guidance1
Understand that the atomic number of an element represents the number of protons in the nucleus of an atom of that element.
Identify the atomic number given in the problem, which is 13 for the element in question.
Recall that the number of protons is always equal to the atomic number, so the number of protons in this atom is 13.
Note that the other numbers provided (6, 26, 14) do not correspond to the atomic number and therefore do not represent the number of protons for this element.
Conclude that the correct number of protons in an atom with atomic number 13 is 13.
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