Question

Question 19
Balance the following the chemical equation:

_ Mg + _ F2 → _ MgF2

a
2:1:1
b
1:1:1
c
1:2:1
d
1:1:2

Answer 1

To balance the chemical equation \( \text{Mg} + \text{F}_2 \rightarrow \text{MgF}_2 \), we can start by identifying the number of atoms of each element on both sides of the equation.

1. On the left side:
- 1 Magnesium (Mg)
- 2 Fluorine (F) from \( \text{F}_2 \)

2. On the right side:
- 1 Magnesium (Mg)
- 2 Fluorine (F) in \( \text{MgF}_2 \)

Both sides of the equation already have 1 Mg atom and 2 F atoms. Therefore, the balanced equation is:

\[
1 \text{ Mg} + 1 \text{ F}_2 \rightarrow 1 \text{ MgF}_2
\]

The coefficients are 1 for Mg, 1 for \( \text{F}_2 \), and 1 for \( \text{MgF}_2 \).

So, the correct answer is:
**b: 1:1:1**