Lead has an atomic number of 82. Which statement describes all neutral atoms and ions of lead?

Question

A. Neutral atoms of lead must have 82 protons. Ions must have 82 protons, as well.
B. Neutral atoms of lead must have 82 electrons. Ions must have 82 electrons, as well.
C. Neutral atoms of lead must have 82 protons, but ions can have more or fewer
D. Neutral atoms of lead must have 82 neutrons, but ions can have more or fewer

Answer 1

The correct statement is:

C. Neutral atoms of lead must have 82 protons, but ions can have more or fewer.

Explanation:

• Neutral atoms of lead (Pb) have an atomic number of 82, meaning they have 82 protons and, therefore, also 82 electrons.
• Ions of lead can be positively charged (losing electrons) or negatively charged (gaining electrons), meaning they can have a different number of electrons than protons. However, all lead atoms (neutral and ions) will always have 82 protons. The number of neutrons in a lead atom can vary as it has different isotopes, but the question is focused on protons and electrons. Thus, option C is accurate.