Moderators: Chem_Mod, Chem_Admin

nshahwan 1L
Posts: 100
Joined: Fri Aug 30, 2019 12:18 am


Postby nshahwan 1L » Wed Nov 06, 2019 12:15 pm

2A.23 On the basis of the expected charges on the monatomic ions, give the chemical formula of each of the following compounds: (a) magnesium arsenide; (b) indium(III) sulfide; (c) aluminum hydride; (d) hydrogen telluride; (e) bismuth(III) fluoride.
Should I know how to do this? we never went over it and I don't remember how to do it but a TA said that we should know so I'm confused

Emily Chirila 2E
Posts: 112
Joined: Sat Jul 20, 2019 12:16 am

Re: nomenclature

Postby Emily Chirila 2E » Wed Nov 06, 2019 12:47 pm

You can figure out the chemical formulas using the charges on the PT. You have to make the charges equally balanced. You can do this by swapping the charges and using it as your subscript.

Magnesium Arsenide
Mg has a 2+ charge, As has a 3- charge, so it would be Mg3As2

Indium (III) Sulfide
In is 3+. S is 2, so it would be In2S3

Aluminum hydride
Al: 3+. H: 1+, AlH3

Hydrogen Telluride
H: 1+, Te: 2-, H2Te

Bismuth (III) Flouride
Bi: 3-, F: 1, BiF3

Cindy Adiwidjaja 1B
Posts: 100
Joined: Sat Jul 20, 2019 12:15 am

Re: nomenclature

Postby Cindy Adiwidjaja 1B » Mon Nov 11, 2019 11:34 am

Additionally, which nomenclatures should we already know? Its been a while since I took high school Chemistry, and I do not remember any chemical compounds other than water and carbon dioxide/monoxide. What others do we need to know?

Posts: 55
Joined: Thu Jul 11, 2019 12:15 am

Re: nomenclature

Postby lasarro » Mon Nov 11, 2019 12:45 pm

Lavelle hasn't formally discussed nomenclatures yet, so I don't think we should worry about it until it comes up. But it's nice to now basic prefixes like tri- means three and so on.

Return to “Electron Configurations for Multi-Electron Atoms”

Who is online

Users browsing this forum: No registered users and 2 guests