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Determining charge

Posted: Sun Feb 16, 2020 6:46 pm
by Shanzey
How are you able to tell what the charge what of each element is? Do all of the charges cancel each other out to make each side of the reaction neutral?

Re: Determining charge

Posted: Sun Feb 16, 2020 6:51 pm
by Mariana Fuentes 1L
I'm having a difficult determining this as well. I'm not sure if there is an easier way to do this, but the way I am finding it takes me a long time and I don't think I am doing it the correct way.

Re: Determining charge

Posted: Sun Feb 16, 2020 7:20 pm
by Brittney Hun 2C
You would use the periodic table patterns and trends. Metals which are on the left of the periodic table will be a positively charged ion depending on the column (column 1 = +1 charge) and will go up to the fourth column. Non-metals, which are on the right of the periodic table, starting the fifth column will be negatively charged depending on the column. (column 5 = -3, column 4 = -2).

Re: Determining charge

Posted: Sun Feb 16, 2020 8:06 pm
by Jessica Li 4F
Elements that are not transition-group elements usually have constant charges, especially nonmetals. In those cases, you would just use the charge of the cation or anion. For instance, potassium would be K+ (1+ charge) while chloride would be Cl- and have a -1 charge. To determine the charge of transition group metal ions, calculate the overall charge of the molecule and the charge of the other ions involved and subtract.

Re: Determining charge

Posted: Sun Feb 16, 2020 9:13 pm
by Rosa Munoz 2E
I am having trouble as well.

Re: Determining charge

Posted: Sun Feb 16, 2020 9:35 pm
by Nathan Rothschild_2D
The overall charge of each side should be equal since no electrons are lost or gained in the reaction, just transferred from one molecule to another. I find it best to memorize the common charges for common elements so you know how the charge will change. I do believe for metals there is a correlation for metals in the same group and there charges, just I am unsure what it is at the moment.