AP Chemistry Ion Sheet Chemical Nomenclature Guide

AP Chemistry Ion Sheet Chemical Nomenclature Guide

The AP Chemistry Ion Sheet provides essential information on chemical nomenclature, focusing on monatomic and polyatomic ions. It includes detailed tables of cations and anions, along with naming conventions for acids and inorganic compounds. Designed for AP Chemistry students, this resource aids in mastering ion identification and nomenclature rules. Key topics include binary acids, ternary acids, and the systematic naming of ionic compounds. This guide is invaluable for exam preparation and understanding chemical formulas.

Key Points

  • Details monatomic anions with their charges and names for AP Chemistry.
  • Explains polyatomic anions, including hydrogen and sulfate derivatives.
  • Covers naming rules for binary and ternary acids relevant to chemical nomenclature.
  • Includes tables for common cations, highlighting variable charge ions.
  • Provides systematic naming guidelines for ionic and molecular compounds.
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AP Chemistry Ion Sheet -- Chemical Nomenclature
You have a choice: (a) You can memorize this list. (b) You can memorize some acid formulas and names
and use them to predict the names and formulas of the polyatomic anions. In the following list: (a) The first name
given is the IUPAC or Stock System name. (b) The second name is a traditional name.
I. Monatomic Anions (-ide suffix):
==========================================
hydride H
-1
fluoride F
-1
chloride Cl
-1
bromide Br
-1
iodide I
-1
astatide At
-1
---------------------------------------------------------------
oxide O
-2
sulfide S
-2
sellenide Se
-2
telluride Te
-2
---------------------------------------------------------------
nitride N
-3
phosphide P
-3
arsenide As
-3
---------------------------------------------------------------
carbide C
-4
silicide Si
-4
=========================================
II. Polyatomic Anions (-ite/-ate suffix)
=========================================
polyatomic anions with hydrogen:
-------------------------------------------------------------
hydrogen carbonate/bicarbonate HCO
3
-1
hydrogen sulfate/bisulfate HSO
4
-1
hydrogen sulfite/bisulfite HSO
3
-1
monohydrogen phosphate HPO
4
-2
dihydrogen phosphate H
2
PO
4
-1
hydrogen oxalate/binoxalate HC
2
O
4
-1
hydrogen phthalate/biphthalate HC
8
H
4
O
4
-1
---------------------------------------------------------------
polyatomic anions with sulfur:
---------------------------------------------------------------
thiocyanate SCN
-1
thiosulfate S
2
O
3
-2
--------------------------------------------------------------
monovalent polyatomic anions:
--------------------------------------------------------------
nitrate NO
3
-1
nitrite NO
2
-1
---------------------------------------------------------------
perchlorate ClO
4
-1
chlorate ClO
3
-1
chlorite ClO
2
-1
hypochlorite ClO
-1
---------------------------------------------------------------
perbromate BrO
4
-1
bromate BrO
3
-1
bromite BrO
2
-1
hypobromite BrO-1
---------------------------------------------------------------
periodate IO
4
-1
iodate IO
3
-1
iodite IO
2
-1
hypoiodite IO
-1
---------------------------------------------------------------
permanganate MnO
4
-1
manganate MnO
3
-1
---------------------------------------------------------------
cyanate OCN
-1
acetate C
2
H
3
O
2
-1
hydroxide OH
-1
cyanide CN
-1
---------------------------------------------------------------
divalent polyatomic anions:
---------------------------------------------------------------
sulfate SO
4
-2
sulfite SO
3
-2
---------------------------------------------------------------
chromate CrO
4
-2
chromite CrO
3
-2
dichromate Cr
2
O
7
-2
---------------------------------------------------------------
carbonate CO
3
-2
oxalate C
2
O
4
-2
phthalate C
8
H
4
O
4
-2
peroxide O
2
-2
---------------------------------------------------------------
tri- and tetravalent polyatomic anions:
---------------------------------------------------------------
perborate BO
4
-3
borate BO
3
-3
---------------------------------------------------------------
phosphate PO
4
-3
phosphite PO
3
-3
---------------------------------------------------------------
arsenate AsO
4
-3
arsenite AsO
3
-3
---------------------------------------------------------------
silicate SiO
4
-4
AP Chemistry Ion Sheet -- Chemical Nomenclature
You have a choice: (a) You can memorize this list. (b) You can learn to use the periodic chart to predict the
positive charges of the metal and metalloid cations. In the following list: (a) The first name given is the IUPAC or
Stock System name. (b) The second name is a traditional name.
I. Monatomic Cations
==========================================
monovalent cations: (Table 8-1and 8-2)
---------------------------------------------------------------
hydrogen H
+1
lithium Li
+1
sodium Na
+1
potassium K
+1
rubidium Rb
+1
cesium Cs
+1
francium Fr
+1
---------------------------------------------------------------
ammonium NH
4
+1
silver Ag
+1
copper (I) or cuprous Cu
+1
gold (I) or aurous Au
+1
mercury (I) or mercurous (Hg
+1
) in Hg
2
+2
---------------------------------------------------------------
divalent cations: (Table 8-1 and 8-2)
---------------------------------------------------------------
beryllium Be
+2
magnesium Mg
+2
calcium Ca
+2
strontium Sr
+2
barium Ba
+2
radium Ra
+2
---------------------------------------------------------------
zinc Zn
+2
cadmium Cd
+2
copper (II) or cupric Cu
+2
mercury (II) or mercuric Hg
+2
chromium (II) or chromous Cr
+2
manganese (II) or manganous Mn
+2
iron (II) or ferrous Fe
+2
cobalt (II) or cobaltous Co
+2
nickel (II) or nickelous Ni
+2
tin (II) or stannous Sn
+2
lead (II) or plumbous Pb
+2
---------------------------------------------------------------
trivalent cations (Table 8-1 and 8-2)
---------------------------------------------------------------
aluminum Al
+3
gold (III) or auric Au
+3
chromium (III) or chromic Cr
+3
manganese (III) or manganic Mn
+3
iron (III) or ferric Fe
+3
cobalt (III) or cobaltic Co
+3
nickel (III) or nickelic Ni
+3
cerium (III) or cerous Ce
+3
arsenic (III) or arsenous As
+3
antimony (III) or antimonous Sb
+3
bismuth (III) or bismuthous Bi
+3
---------------------------------------------------------------
tetra- & pentavalent cations (Table 8-2)
---------------------------------------------------------------
tin (IV) or stannic Sn
+4
lead (IV) or plumbic Pb
+4
cerium (IV) or ceric Ce
+4
arsenic (V) or arsenic As
+5
antimony (V) or antimonic Sb
+5
bismuth (V) or bismuthic Bi
+5
==========================================
Handout Table 8-2: Positive Ions Whose Charges Vary
Traditional Name
IUPAC Name root -ous ending -ic ending
copper (I) and (II) cupr- Cu+1 Cu+2
gold (I) and (III) aur- Au+1 Au+3
mercury (I) and (II) mercur- Hg2+2 Hg+2
chromium (II) and (III) chrom- Cr+2 Cr+3
manganese (II) and (III) mangan- Mn+2 Mn+3
iron (II) and (III) ferr- Fe+2 Fe+3
cobalt (II) and (III) cobalt- Co+2 Co+3
nickel (II) and (III) nickel- Ni+2 Ni+3
tine (II) and (IV) stann- Sn+2 Sn+4
lead (II) and (IV) plumb- Pb+2 Pb+4
cerium (III) and (IV) cer- Ce+3 Ce+4
arsenic (III) and (V) arsen- As+3 As+5
antimony (III) and (V) antimon- Sb+3 Sb+5
bismuth (III) and (V) bismuth- Bi+3 Bi+5
AP Chemistry -- Acids and the Nomenclature of Ions
I. Binary Acids and Monatomic Anions:
Binary Acids are those molecular compounds beginning with hydrogen and ending with another nonmetal or
possibly a metalloid. Note that HCN, hydrocyanic acid is also included in this group. To make the acids into
monatomic anions, remove the hydrogens -- one at a time. Each hydrogen removed leaves the anion with a -1
charge.
Binary Acid Naming Rule = hydro prefix - root of 2nd element -ic suffix acid
Anion Naming Rule = drop the prefix and the word acid, change the suffix to -ide
acid formulaacid name ion formula ion name
Examples: HF hydrofluoric acid F
-1
fluoride
HCl hydrochloric acid Cl
-1
chloride
HBr hydrobromic acid Br
-1
bromide
HI hydroiodic acid I
-1
iodide
HCN hydrocyanic acid CN
-1
cyanide
H
2
S hydrosulfuric acid HS
-1
hydrogen sulfide or bisulfide
S
-2
sulfide
HN
3
hydrazoic acid N
3
-1
azide
II. Ternary Acids or Oxy-Acids:
Ternary acids contain three of more elements. They start with hydrogen, end with oxygen, and have another
nonmetal or metalloid in between. To make the acids into polyatomic anions, remove the hydrogens -- one at a time.
Each hydrogen removed leaves the anion with a -1 charge. Each ternary acid belongs to a family of potentially four
members. One member of the family is designated the "parent acid." You must memorize the names and formulas
of the common parent acids.
Ternary Acid Family Naming Rules:
HIO
4 (add an oxygen to parent) add per- prefix to parent name: periodic acid
** HIO
3
parent acid ** iodic acid
HIO
2 (remove one oxygen) change suffix to -ous: iodous acid
HIO (remove a second oxygen) add hypo- prefix to -ous name: hypoiodous acid
Anion Naming Rule = drop the word acid
change -ic suffix to -ate
change -ous suffix to -ite
acid formulaacid name ion formulaion name
Examples: HIO
4
periodic acid IO
4
-1
periodate
HIO
3
iodic acid IO
3
-1
iodate
HIO
2
iodous acid IO
2
-1
iodite
HIO hypoiodous acid IO-
1
hypoiodite
(H
3
AsO
4
= arsenic acid H
2
AsO
4
-1
= dihydrogen arsenate HAsO
4
-2
= monohydrogen arsenate)
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End of Document
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FAQs of AP Chemistry Ion Sheet Chemical Nomenclature Guide

What are monatomic anions and how are they named?
Monatomic anions are negatively charged ions formed from single atoms, such as fluoride (F-1) and chloride (Cl-1). They are named by taking the root of the element's name and adding the suffix '-ide.' For example, the anion derived from sulfur is called sulfide (S-2). Understanding these naming conventions is crucial for AP Chemistry students as they prepare for exams and lab work.
What is the difference between binary and ternary acids?
Binary acids consist of hydrogen and one other nonmetal element, while ternary acids contain hydrogen, oxygen, and another nonmetal. For instance, hydrochloric acid (HCl) is a binary acid, whereas sulfuric acid (H2SO4) is a ternary acid. The naming conventions differ as well: binary acids use the prefix 'hydro-' and the '-ic' suffix, while ternary acids change the '-ate' or '-ite' suffix of the anion to '-ic' or '-ous,' respectively. Mastery of these concepts is essential for students studying chemical nomenclature.
How are polyatomic ions named in AP Chemistry?
Polyatomic ions are named based on their composition and charge. For example, the sulfate ion (SO4-2) and the nitrate ion (NO3-1) are common polyatomic ions. The naming convention typically involves using the root of the element name and adding '-ate' or '-ite' based on the number of oxygen atoms present. Understanding these naming rules helps students accurately identify and use polyatomic ions in chemical equations and reactions.
What are the key rules for naming ionic compounds?
Ionic compounds are named by combining the cation name with the anion name. If the cation has multiple oxidation states, a Roman numeral is used to indicate its charge. For example, iron(II) chloride (FeCl2) indicates iron with a +2 charge. The anion name typically ends in '-ide,' '-ate,' or '-ite,' depending on the type of ion. These naming conventions are critical for clear communication in chemistry and are emphasized in AP Chemistry courses.
What is the significance of the AP Chemistry Ion Sheet?
The AP Chemistry Ion Sheet serves as a comprehensive reference for students, summarizing essential concepts in chemical nomenclature. It aids in the understanding of ion charges, naming conventions, and the relationships between different types of acids and bases. This resource is particularly useful for exam preparation, helping students to quickly recall important information and apply it in problem-solving scenarios. Mastery of these topics is crucial for success in AP Chemistry and future science courses.

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