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Chemistry 59 Online
AddieroniAndCheese:

AP Chem Practice Helllp please. I have no idea where to start! Replace the reactant specified in each of the following compounds with another element based on periodic properties of the periodic table. Justify each answer using the electron configurations of the elements. a. Replace Al in Al + O2 → Al2O3. b. Replace Br in Be + Br2 → BeBr2.

messs:

okay, so first do u have an oxidation chart

messs:

because u'll need it for this

AddieroniAndCheese:

lemme check

messs:

and are u confused on where the 3 came from on Al2O3

messs:

because thats the oxidation number of Al they swapped electrons and also electrons cn have a different number of oxidation number so don't forget that

AddieroniAndCheese:

1 attachment
AddieroniAndCheese:

messs:

so i think the question is asking u to swap the Al and Br with another element that as the same amount of oxidation number

AddieroniAndCheese:

ohhhh ok

messs:

so anything on their collumn can be put for their answer

messs:

what do u think?

AddieroniAndCheese:

tbh it make sense to me but I don't know enough to confirm it. Thanks for the help!!!

AddieroniAndCheese:

furthermore, I tried to replace them with ones from the same group (reactive nonmetals for one, post transition metals for the other)

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