Respuesta :
The coefficient of Al in the balanced chemical equation has been 2. Thus, option B is correct.
The balanced chemical equation has been termed as the equation where the atoms of each element have been the same on the product and the reactant side.
The given chemical equation has consisted of 2 atoms of Br on the reactant side and 3 atoms of Br on the product side.
The atoms have been balanced with the addition of coefficient 3 on the reactant side, and 2 on the product side. This will give the 6 atoms of Br on both the products and the reactant's side.
[tex]\rm Al\;+\;3\;Br_2\;\rightarrow\;2\;AlBr_3[/tex]
The atoms of Al have become imbalanced. The Al atoms can be balanced by the addition of 2 as a coefficient on the reactant side. This will provide 2 atoms of Al on both the product and the reactant side.
[tex]\rm 2\;Al\;+\;3\;Br_2\;\rightarrow\;2\;AlBr_3[/tex]
The coefficient of Al in the balanced chemical equation has been 2. Thus, option B is correct.
For more information about coefficient in a balanced chemical equation, refer to the link:
https://brainly.com/question/238492
