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the valence of aluminum +3 and the valence of chlorine is -1 the formula for aluminum chloride is correctly written as
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the valence of aluminum +3 and the valence of chlorine is -1 the formula for aluminum chloride is correctly written as

User Shaun McHugh
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AlCl₃

Remember, you want to make their charges cancel. So, we need 3 chlorine atoms (because chlorine has a charge of -1) for every 1 aluminum atom (because aluminum has a charge of +3 ).


User Ikbel
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