Question

the compound aluminum chloride has 1 aluminum atom and 3 chlorine atoms. this compound can be represented by the chemical formula a al₃cl b al₁cl₃ c alcl d alcl₃

Explanation:

In chemical formulas, the sub - script indicates the number of atoms of each element in a compound. Aluminum chloride has 1 aluminum (Al) atom and 3 chlorine (Cl) atoms, so its chemical formula is written as $AlCl_{3}$. The 1 for aluminum is usually not written explicitly as it is the default when no sub - script is present.

Answer:

D. $AlCl_{3}$