3.25 c)

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Mario Reyes 1C
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Joined: Fri Apr 06, 2018 11:04 am

3.25 c)

Postby Mario Reyes 1C » Sun May 20, 2018 2:55 pm

On the basis of the expected charges on the monatomic ions, give the chemical formula of each of the following compounds: (c) aluminum hydride.

Al has a 3+ charge, and I think Hydride is referring to Hydrogen. I am confused on what charge Hydrogen would have.

Jazmin 1H
Posts: 25
Joined: Fri Apr 06, 2018 11:01 am

Re: 3.25 c)

Postby Jazmin 1H » Sun May 20, 2018 5:02 pm

Hydrogen has a charge of +1, as it says on the periodic table.

nelquosey
Posts: 31
Joined: Fri Apr 06, 2018 11:02 am

Re: 3.25 c)

Postby nelquosey » Sun May 20, 2018 5:26 pm

Hydrogen can either have a charge of positive or negative 1 but since Aluminum already assumes the positive charge, you use the Hydrogen charge of 1- to construct your formula :)

Mario Reyes 1C
Posts: 45
Joined: Fri Apr 06, 2018 11:04 am

Re: 3.25 c)

Postby Mario Reyes 1C » Sun May 20, 2018 5:51 pm

nelquosey wrote:Hydrogen can either have a charge of positive or negative 1 but since Aluminum already assumes the positive charge, you use the Hydrogen charge of 1- to construct your formula :)


Thank you! Do you know why it can be +1 or -1? I feel it is because it can add 1 electron to fill its outermost shell, but wouldn't losing an electron mean it would lose all its shells since it is in the 1s orbital?

Tarek Abushamma
Posts: 30
Joined: Fri Apr 06, 2018 11:01 am

Re: 3.25 c)

Postby Tarek Abushamma » Sun May 20, 2018 9:35 pm

The cation of Hydrogen is just a proton, so there probably are not any electron shells associated with it.


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