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Naming Inorganic

CompoundsAP Chemistry

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We will focus on:

Ions

Cations

Single and polyatomic

Anions

Single

Polyatomic

Oxyanions

Anions derived by adding H+

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Cations

Cations are the +

We name monoatomic ions asfollows:

Keep name and add the word -ion

Two systems

Fe2+ iron (II) ionFe3+ iron (III) ion Also called

Fe2+ ferrous ionFe3+ ferric ion

Cu+ copper (I) ionCu2+ copper (II) ion

Also called Cu+ cuprous ionCu2+ cupric ion

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Polyatomic cations

Ammonium ion

Hydronium ion

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Anions

Anions are

Name as follows:

chop off ending and addide

For example:

Hydride ion

Oxide ion

Nitride ion

Some polyatomics:

OH- CN- O22-

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Polyatomic anions containing

oxygen

These are called oxyanions

They are named by # of oxygen atoms

For example:

NO3- nitrate

NO2- nitrite

SO42- Sulfate

SO32- Sulfite

-ate ending goes to the ion is series with more oxygen

-ite goes to the lower ion in series

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Prefixes used when there is up to 4in series

For example: ClO4

- perchlorate ion

ClO3- chlorate ion

ClO2- chlorite ion

ClO- hypochlorite ion

Polyatomic anions containing

oxygen cont..

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Anions w/ H+

Carbonate ion hydrogen carbonate

Phosphate ion dihydrogen phosphate

CO32- HCO3

-

PO33- H2CO3-

Older method added mono and bi..such as sodium bicarbonate

NaHCO3

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Ionic Compounds

Just put them together!

Cation + Anion equals name

For example:Barium bromide

Aluminum nitrate

Copper (II) perchlorateSodium permanganate

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Name / write formulas for the

following

Sodium nitrite

Hydrogen peroxide

K2Cr2O7Calcium hypochlorite

Strontium Sulfite

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Names of acids

Two ways of naming:

Acids based on anions that end in ide

Acids based on anions that end in ate

or -ite

Cl- Chloride ion HCl hydrochloric acid

S2- sulfide ion H2S hydrosulfuric acid

ClO4- perchlorate ion HClO4 perchloric acid

ClO3- chlorate ion HClO3 chloric acid

ClO2- chlorite ion HClO2 chlorous acid

ClO- hypochlorite ion HClO hypochlorous acid

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Naming Compounds Flashcard

Activity

Write the following cations andanions on flashcards and practicecombining then together to make

compounds

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Monoatomic Cations

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Polyatomic Anions

Write the polyatomic ions on index cardsand the name on the reverse side

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Name the following

C2H302-

CO32-

SO42- ClO3

- ClO2

- ClO-

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Write formulas for the following

nitrate

nitrite

perchlorate

phosphate

Sulfide Fluorine Bromide Iodide Chloride

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Acids

Make an H+ card Use the following to make acids

acetate, C2H302-

carbonate, CO32-

sulfate, SO42- chlorate, ClO3

- chlorite, ClO2

- hypochlorite, ClO-

nitrate, NO3- nitrite, NO2

-

perchlorate, ClO4-

phosphate, PO43-

Sulfide S2-

Fluorine F-

Bromide Br-

Iodide I-Chloride Cl-

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Name these acids

HCN

HNO3

H2SO4H2SO3Hydrobromic Acid HBr

Hydrocarbonic Acid H2CO3

Hydrocyanic acid

Nitric acid

Sulfuric acid

Sulfurous acid

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Covalent compounds

Nonmetal + nonmetal

Sharing of electrons!

Element w/ lower electronegativity isfirst

One mono six - hexaTwo di seven - hepta

Three tri eight - octaFour tetra nine - nonaFive penta ten - deca

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Covalent Compounds

Name the following

N2O5

CCl4

S3N2