nomenclature naming ternary compounds. naming ternary compounds reference point contain at least 3...

Nomenclature

Naming Ternary Compounds

Naming Ternary Compounds Reference Point

Contain at least 3 elements

Reference point begins with compounds that contain H, O, and a third non-metal

These compounds are called acids


Acids are compounds formed from nonmetal elements only

Examples

HClO3

HNO3

H2SO4


Chloric acidReference

Nonmetal- use stem of chlorine

-ic ending

Acid = H

HClO3


HClO4

perchloric acid

-ic ending

Use a prefix- per

Acid = H


HClO2

chlorous acid

-ous ending

Acid = H


HClO

hypochlorous acid

-ous ending

Acid = H

Use a prefix- hypo


• Name these acids

(a) HBrO4

(b) HBrO3

(c) HBrO2

(d) HBrO

Naming Ternary Compounds Solutions

• Name these acids

(a) perbromic acid

(b) bromic acid

(c) bromous acid

(d) hypobromous acid

Naming Ternary Compounds Periodic Table Reference Point

18

13 14 15 16 17 He

3 H & 3 O 2 H & 3 O 1 H & 3 O O F

Noble G

ases

2 H & 3 O

3 H

& 4

O

2 H &

4 O

1 H &

3 O

Naming Ternary CompoundsNaming salts of polyatomic ionsName the metal followed by the name of the

polyatomic ionSalts do not contain the hydrogen from the acid;

drop the word acid from the nameIf the acid name ended in –ic, change it to –ateIf the acid name ended in –ous, change it to -ite

Naming Ternary CompoundsExamples:

NaNO3 Sodium nitrate

K2SO4 Potassium sulfate

Al(HCO3)3 Aluminum bicarbonate

or aluminum hydrogen

carbonate

Polyatomic Ions

A group of atoms with an overall charge.

NH4+ ammonium OH- hydroxide

NO3- nitrate NO2

- nitrite

CO32- ______________

HCO3- hydrogen carbonate (bicarbonate)

Polyatomic Compounds

Match each set with the correct name:

A. Na2CO3 1) magnesium sulfite

MgSO3 2) magnesium sulfate

MgSO4 3) sodium carbonate

B. Ca(HCO3)2 1) calcium carbonate

CaCO3 2) calcium phosphate

Ca3(PO4)2 3) calcium bicarbonate

Solution

A. Na2CO3 3) sodium carbonate

MgSO3 1) magnesium sulfite

MgSO4 2) magnesium sulfate

B. Ca(HCO3)2 3) calcium bicarbonate

CaCO3 1) calcium carbonate

Ca3(PO4)2 2) calcium phosphate

Polyatomic Compounds

A. aluminum nitrate

1) AlNO3 2) Al(NO)3 3) Al(NO3)3

B. copper(II) nitrate

1) CuNO32) Cu(NO3)2 3) Cu2(NO3)

C. Iron (III) hydroxide

1) FeOH 2) Fe3OH 3) Fe(OH)3

D. Tin(IV) hydroxide

1) Sn(OH)4 2) Sn(OH)2 3) Sn4(OH)

Solution

A. aluminum nitrate

3) Al(NO3)3

B. copper(II) nitrate

2) Cu(NO3)2

C. Iron (III) hydroxide

3) Fe(OH)3

D. Tin(IV) hydroxide

1) Sn(OH)4

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