Which symbol represents an atom with atomic number 28?

Name: Which symbol represents an atom with atomic number 28?
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Question

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The atomic number of an atom is the number of protons in its nucleus. The symbol of the atom is determined by its atomic number, which is 28 in this case. The symbol in choice D is the only one that has a 28 in the subscript, which represents the atomic number. Therefore, D is the correct choice.

Which Symbol Represents an Atom with Atomic Number 28