Ionic Chemical Equation

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Jason Slater 3I
Posts: 16
Joined: Wed Sep 21, 2016 2:58 pm

Ionic Chemical Equation

Postby Jason Slater 3I » Sun Oct 16, 2016 11:38 pm

Why are there roman numerals in parenthesis after some metals in ionic bonds, such as Cu(II)?

Ethan Frankel 2C
Posts: 20
Joined: Wed Sep 21, 2016 2:56 pm

Re: Ionic Chemical Equation

Postby Ethan Frankel 2C » Sun Oct 16, 2016 11:47 pm

The roman numeral represents the charge. Cu(II) is also Cu2+

Samuel_Vydro_1I
Posts: 21
Joined: Fri Jul 22, 2016 3:00 am

Re: Ionic Chemical Equation

Postby Samuel_Vydro_1I » Mon Oct 17, 2016 9:20 am

Therefore, the number in parentheses denotes what types of bonds the metals can make. For instance, Copper can be Cu(i) or Cu(ii). Cu(i) can give in one electron from a nonmetal as it is Cu1+ while Cu(ii) can give two electrons as it is Cu2+. Thus Cu(i) can form a bond like Cu2O while Cu(ii) can simply be CuO


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