Question

lets pause for a moment and take a second to practice predicting the products of reactions.
if calcium were to react with chlorine, what would likely form? select all that apply.
a calcium anion and a chlorine cation
a ca² and cl² ion
two anions
a ca² ion and two cl¹ ions
a calcium cation and two chloride anions
a ca₂cl₂ compound
a cacl₂ compound

Explanation:

• Calcium (Ca) is a metal and tends to lose electrons to form cations. Chlorine (Cl) is a non - metal and tends to gain electrons to form anions.
• Calcium has a valence of + 2 (\(Ca^{+2}\)), and chlorine has a valence of - 1 (\(Cl^{-1}\)).
• For charge balance, one \(Ca^{+2}\) ion will combine with two \(Cl^{-1}\) ions.
• The compound formed is \(CaCl_{2}\) (calcium chloride). In the ionic form, we have a calcium cation (\(Ca^{+2}\)) and two chloride anions (\(2Cl^{-1}\)).

Answer:

D. A \(Ca^{+2}\) ion and two \(Cl^{-1}\) ions, E. A calcium cation and two chloride anions, G. A \(CaCl_{2}\) compound