객관식
Which of the following is the chemical symbol for the element silver?
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객관식
Which element has 15 protons in its nucleus?
A
Nitrogen (N)
B
Phosphorus (P)
C
Sulfur (S)
D
Chlorine (Cl)
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검증된 단계별 안내1
Recall that the number of protons in the nucleus of an atom is called the atomic number, which uniquely identifies an element.
Look up the atomic numbers of the given elements: Nitrogen (N), Phosphorus (P), Sulfur (S), and Chlorine (Cl).
Nitrogen has an atomic number of 7, meaning it has 7 protons.
Phosphorus has an atomic number of 15, meaning it has 15 protons.
Since the question asks for the element with 15 protons, identify Phosphorus (P) as the correct element.
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