Chemistry · Atomic Structure

Which of the following statements is NOT correct regarding the atomic number of an element?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1Atoms of different chemical elements can have the same atomic number.✓
2All atoms of a particular element have the exact same number of protons and thus the same atomic number.
3It is conventionally represented by the letter 'Z'.
4The total number of protons in the nucleus of an atom defines its atomic number.

Correct answer

Atoms of different chemical elements can have the same atomic number.

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