Answer:
2, 1, 2
Explanation:
Na + Br2 —> NaBr
To balance the equation, we do the following:
There are 2 atoms of Br on the right side and 1atom on the left side. It can be balance by putting 2 in front of NaBr as shown below:
Na + Br2 —> 2NaBr
Now, we have 2 atoms of Na on the right side and 1atom on the left. Thus, it can be balance by putting 2 in front of Na as shown below:
2Na + Br2 —> 2NaBr
Now, the equation is balanced.
The coefficients are 2, 1, 2
