Name to Bond  [ENDORSED]

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jessicasam
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Joined: Wed Nov 15, 2017 3:02 am
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Name to Bond

Postby jessicasam » Tue May 15, 2018 10:39 pm

What does it mean if a molecular name has parentheses? For example, what does thallium(III) chloride mean?
Thanks!

nicolesalcedo
Posts: 30
Joined: Fri Apr 06, 2018 11:05 am

Re: Name to Bond  [ENDORSED]

Postby nicolesalcedo » Tue May 15, 2018 11:12 pm

I think the numbers represent the charge of the element. For example, CuO can be written as Copper(II) oxide to describe that copper has a +2 charge. Since O has a -2 charge, the overall charge is 0.

For thallium III chloride: Tl has a +3 charge and Cl has a -1 charge, so you need 3 Cl to make the compound stable. (therefore the formula is TlCL3)

Hope this makes sense!


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