Question

5 when we acted out ion formation, did you gain or lose electrons? why?

Explanation:

The answer depends on the element's role in ion formation. Metals (like Na, Mg) usually lose electrons to achieve a stable octet (or duet for H/He) as their valence electrons are few (1 - 3), so losing is easier. Non - metals (like Cl, O) gain electrons because they need 1 - 3 more electrons to fill the valence shell, and gaining is easier than losing many. For example, Na (1 valence e⁻) loses it to form $Na^+$, Cl (7 valence e⁻) gains 1 to form $Cl^-$.

Answer:

If representing a metal atom (e.g., sodium, magnesium), electrons are lost. This is because metal atoms have 1 - 3 valence electrons, and losing these electrons allows them to achieve a stable electron configuration (like a noble gas). If representing a non - metal atom (e.g., chlorine, oxygen), electrons are gained. Non - metal atoms typically have 5 - 7 valence electrons, and gaining electrons (1 - 3) helps them achieve a stable noble - gas - like electron configuration.