If a neutral atom has 11 protons, how many electrons does it have?

Master chemistry for the PCC Competency Exam with this quiz. Use flashcards and multiple-choice questions with hints and explanations. Excel in your test!

Multiple Choice

If a neutral atom has 11 protons, how many electrons does it have?

Explanation:
In a neutral atom, the number of electrons equals the number of protons, because the positive charges of the protons are balanced by the negative charges of the electrons. If there are 11 protons, there must be 11 electrons in the neutral state. This also corresponds to the element’s atomic number being 11 (sodium). If the atom were ionized, the electron count would differ, but neutrality sets them equal.

In a neutral atom, the number of electrons equals the number of protons, because the positive charges of the protons are balanced by the negative charges of the electrons. If there are 11 protons, there must be 11 electrons in the neutral state. This also corresponds to the element’s atomic number being 11 (sodium). If the atom were ionized, the electron count would differ, but neutrality sets them equal.

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