Question

part b which statement is true regarding main - group families of the periodic table? a argon is a noble gas that gains 1 electron to become an anion to become stable. b flourine is a chalcogen that gains 1 electron to become an anion to become stable. c lithium is an alkali metal that loses 1 electron to become a cation to become stable. d magnesium is an alkaline earth metal that loses two electrons to become an anion to become stable.

Explanation:

• Option A: Argon is a noble gas with a full - outer electron shell and does not gain electrons to become an anion.
• Option B: Fluorine is a halogen, not a chalcogen. Halogens gain 1 electron to become an anion to achieve a stable electron configuration.
• Option C: Lithium is an alkali metal that loses 1 electron to become a cation and achieve stability.
• Option D: Magnesium is an alkaline - earth metal that loses two electrons to become a cation, not an anion.

Answer:

C. Lithium is an alkali metal that loses 1 electron to become a cation to become stable.