Question

which of the following elements will gain electrons to form an ion? check all that apply.
f ca zn ne

Explanation:

Step1: Analyze the elements' electron - gaining tendency

• Fluorine (\(F\)) is a non - metal. Non - metals generally gain electrons to achieve a stable electron configuration. Fluorine has 7 valence electrons and gains 1 electron to form \(F^-\) with a stable octet.
• Calcium (\(Ca\)) is a metal. Metals lose electrons to form cations. Calcium has 2 valence electrons and loses 2 electrons to form \(Ca^{2 +}\).
• Zinc (\(Zn\)) is a metal. Metals lose electrons. Zinc has 2 valence electrons (in its outermost shell for simple ion - formation considerations) and loses 2 electrons to form \(Zn^{2+}\).
• Neon (\(Ne\)) is a noble gas. Noble gases have a stable electron configuration (full valence shell) and do not gain or lose electrons easily under normal conditions.

Answer:

F.