Chapter 2: Nomenclature

Question 1

What is the convention for naming monoatomic ANions?

Answer 1

Element name + ide + ion

Hydride ion
Oxide ion

Question 2

What is the convention for naming cations?

Answer 2

Element name + ion

exp. Sodium ion
exp. Potassium ion

Question 3

Why isn’t there a convention for naming cations with enough hydrogens added to make neutral acid?

Answer 3

Cations/metals make bases, not acids.

exp. Ca ion would make CaOH, not CaH

Question 4

What is the convention for naming ionic compounds (cation + anion)

Answer 4

Cation name + anion + ide

you don’t need the number prefixes

Question 5

What is the convention for naming polyatomic anions that have enough hydrogens added to them to turn them from charged ions into a neutral acids?

Answer 5

ate = ic + acid
ite = ous + acid

chlorate and hydrogen = chloric acid
perchlorate and hydrogen = perchloric acid
chlorite hydrogen = chlorous acid
hypochlorite and hydrogen = hypochlorous acid

Question 6

What is the convention for naming polyatomic anions that DO NOT have enough hydrogens added to them to turn them from charged ions into a neutral acids?

Answer 6

hydroGEN + anion name

exp. H2PO4^- is called dihydrogen phosphate

Question 7

What is the convention for naming anions (like chloride ion) that have enough hydrogens added to them to turn them from charged ions into a neutral acids?

Answer 7

hydro……….ic acid

Hydrogen and chloride make HCl hydrochloric acid
Hydrogen and bromide make HBr hydrobromic acid

Question 8

What is the convention for naming molecular compounds?

Answer 8

left most (or lower most) element + # other element + ide

(#prefix on the first element not needed if # = 1)

exp. nitrogen trifluoride