Question

chem semester 1 final 2024
what is the formula of the compound formed when magnesium reacts with fluo
options: mg₂f, f₂mg, mgf, mgf₂

Explanation:

Step1: Determine ion charges

Magnesium (Mg) typically has a \(+2\) charge (\(Mg^{2+}\)), fluorine (F) typically has a \(-1\) charge (\(F^-\)).

Step2: Balance charges in compound

To balance the charges, we need 2 \(F^-\) ions to neutralize 1 \(Mg^{2+}\) ion. So the formula should be \(MgF_2\) (since \(2\times(-1) + (+2) = 0\)).

Answer:

\(MgF_2\) (assuming the first option is \(MgF_2\) from the visible text, the correct option would be the one labeled with \(MgF_2\))