Why Is an Iron Atom a Different Element Than a Sodium

question 2

Multiple Choice

Why is an iron atom a different element than a sodium atom?

• A) A sodium atom has fewer neutrons in its nucleus than an iron atom.
• B) An iron atom has more protons in its nucleus than a sodium atom.
• C) A sodium atom is bigger than an iron atom.
• D) All of the above are true.

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