Multiple choice general knowledge science & technology

An element is determined by the number of

  1. atoms

  2. electrons

  3. neutrons

  4. protons
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The number of protons in an atom's nucleus determines which element it is. This is called the atomic number. Changing the number of protons changes the element itself. Electrons, neutrons, and atoms are not defining characteristics.

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