Why is a neutral iron atom a different element from a neutral carbon atom?
A) A carbon atom has fewer neutrons in its nucleus than an iron atom.
B) An iron atom has more protons in its nucleus than a carbon atom.
C) An iron atom has more electrons than a carbon atom.
D) A carbon atom is bigger than an iron atom.
E) None of these is correct.

Question

Quizplus · Accepted Answer

The identity of an element is determined by the number of protons in its nucleus. An iron atom has more protons than a carbon atom, making them different elements.

Why Is a Neutral Iron Atom a Different Element from a Neutral