1. NOMENCLATURE OF INORGANIC CHEMISTRY. Binary compounds
Física y química 3º E.S.O.
SECOND TERM
UNIT 2 (SECOND PART):
NOMENCLATURE OF INORGANIC CHEMISTRY. Binary compounds
2_II_5: HYDROXIDES

2. 5.- HYDROXIDES
Any chemical compound containing one or more groups, each comprising one atom each of oxygen and hydrogen bonded together and functioning as the negatively charged ion OH-
KOH and Ca(OH)2 have different formula: in potassium hydroxide, one hydroxyl group is attached while in calcium hydroxide two hydroxyl group are present

3. 5.- HYDROXIDES Me (OH)n SODIUM HYDROXIDE Na OH NaOH Fe OH Fe(OH)3
5.1. MULTIPLICATIVE PREFIXES NOMENCLATURE
Hydroxides are combinations of a metal with -OH. The hydroxyl has oxidation number -1; the metal has a positive oxidation number.
mono-
di-
tri-
tetra-
etc...
(+N) (-1)
Me (OH)n
METAL HYDROXIDE
The name of the ELEMENT is placed first. Then the word HYDROXIDE is written. It is preceded by the prefix mono-,di-, tri-, tetra-, etc ..., which indicates the number of OH- in the molecule. (the prefix is deleted if there is no doubt),
SODIUM HYDROXIDE Na OH
NaOH Fe OH
Fe(OH)3
IRON TRIHYDROXIDE OH
IRON DIHYDROXIDE Fe
Fe(OH)2 OH

4. 5.- HYDROXIDES Me (OH)n Say the name: Say the formule:
5.1. MULTIPLICATIVE PREFIXES NOMENCLATURE
Hydroxides are combinations of a metal with -OH. The hydroxyl has oxidation number -1; the metal has a positive oxidation number.
mono-
di-
tri-
tetra-
etc...
(+N) (-1)
Me (OH)n
METAL HYDROXIDE
Say the name: Say the formule:
CuOH: Lead tetrahydroxide:
Au(OH)3: Lead dihydroxide:
Pt (OH)2: Tin dihydroxide:
LiOH: Copper monohydroxide:
Mg(OH)2: Copper dihydroxide::
Sn(OH)4: Cobalt trihydroxide:
AuOH: Sodium hydroxide :

5. 5.- HYDROXIDES Me (OH)n 5.1. MULTIPLICATIVE PREFIXES NOMENCLATURE
Hydroxides are combinations of a metal with -OH. The hydroxyl has oxidation number -1; the metal has a positive oxidation number.
mono-
di-
tri-
tetra-
etc...
(+N) (-1)
Me (OH)n
METAL HYDROXIDE
Say the name Say the formule:
CuOH: Copper monohydroxide Lead tetrahydroxide: Pb(OH)4
Au(OH)3: Gold trihydroxide Lead dihydroxide: Pb(OH)2
Pt (OH)2: Platinum dihydroxide Tin dihydroxide: Sn(OH)2
LiOH: Lithium hydroxide Copper monohydroxide: CuOH
Mg(OH)2: Magnesium hydroxide Copper dihydroxide: Cu(OH)2
Sn(OH)4: Tin tetrahydroxide Cobalt trihydroxide: Co(OH)3
AuOH: Gold monohydroxide Sodium hydroxide: NaOH

6. 5.- HIDRÓXIDOS Me (OH)n Nombra Formula: CuOH: Tetrahidróxido de plomo:
5.1. NOMENCLATURA DE PREFIJOS MULTIPLICADORES
Escribir la palabra HIDRÓXIDO precedida por el prefijo numeral (mono-, di-, tri-, etc…), que corresponda según el número de grupos OH- unidos al elemento; posteriormente se escribe la preposición DE; seguidamente, se nombra el elemento. El prefijo se suprime, a menos que de lugar a confusión.
mono-
di-
tri-
tetra-
etc...
(+N) (-1)
Me (OH)n
Nombra Formula:
CuOH: Tetrahidróxido de plomo:
Au(OH)3: Dihidróxido de plomo:
Pt (OH)2: Dihidróxido de estaño:
LiOH: Monohidróxido de cobre:
Mg(OH)2: Dihidróxido de cobre:
Sn(OH)4: Trihidróxido de cobalto: 3
AuOH: Hidróxido de sodio:
HIDRÓXIDO DE ELEMENTO

7. 5.- HIDRÓXIDOS Me (OH)n Nombra Formula:
5.1. NOMENCLATURA DE PREFIJOS MULTIPLICADORES
Escribir la palabra HIDRÓXIDO precedida por el prefijo numeral (mono-, di-, tri-, etc…), que corresponda según el número de grupos OH- unidos al elemento; posteriormente se escribe la preposición DE; seguidamente, se nombra el elemento. El prefijo se suprime, a menos que de lugar a confusión.
mono-
di-
tri-
tetra-
etc...
(+N) (-1)
Me (OH)n
Nombra Formula:
CuOH: Monohidróxido de cobre Tetrahidróxido de plomo:Pb(OH)4
Au(OH)3: Trihidróxido de oro Dihidróxido de plomo: Pb(OH)2
Pt (OH)2: Dihidróxido de platino Dihidróxido de estaño: Sn(OH)2
LiOH: Hidróxido de litio Monohidróxido de cobre: CuOH
Mg(OH)2: Hidróxido de magnesio Dihidróxido de cobre: Cu(OH)2
Sn(OH)4: Tetrahidróxido de estaño Trihidróxido de cobalto: Co(OH)3
AuOH: Monohidróxido de oro Hidróxido de sodio: NaOH
HIDRÓXIDO DE ELEMENTO

8. 5.- HYDROXIDES Me (OH)n METAL (N) HYDROXIDE SODIUM HYDROXIDE Na OH
5.2. Oxidation number nomenclature (Stock system)
Hydroxides are combinations of a metal with -OH. The hydroxyl has oxidation number -1; the metal has a positive oxidation number.
(+N) (-1)
Me (OH)n
The name of the ELEMENT is placed first, followed by its the oxidation number if there are two or more possibilities Then the word HYDROXIDE is written.
METAL (N) HYDROXIDE
SODIUM HYDROXIDE Na OH
NaOH Fe OH
Fe(OH)3
IRON(III) HYDROXIDE OH
IRON(II) HYDROXIDE Fe
Fe(OH)2 OH

9. Here are some examples involving representative metals
Here are some examples involving representative metals. Because each of these metals has only one possible oxidation state, which is equal to its group number in the periodic table, we don’t have to specify the metals positive charge in the name.
These elements can have more than one positive ion, so the name must indicate which one it is. You can determine the positive charge by seeing how many hydroxide ions, each with a charge of minus one, it takes to make a neutral compound.

10. 5.- HYDROXIDES Me (OH)n METAL (N) HYDROXIDE Name Formule:
5.2. Oxidation number nomenclature (Stock system)
Hydroxides are combinations of a metal with -OH. The hydroxyl has oxidation number -1; the metal has a positive oxidation number.
(+N) (-1)
Me (OH)n
The name of the ELEMENT is placed first, followed by its the oxidation number if there are two or more possibilities Then the word HYDROXIDE is written.
Name Formule:
CuOH: Lead(IV) hydroxide:
Au(OH)3: Berilium hydroxide:
Pt(OH)2: Lead (II) hydroxide:
LiOH: Copper(I) hydroxide:
Mg(OH)2: Copper(II) hydroxide:
Co(OH)2: Cobalt(III) hydroxide:
AuOH: Potassium hydroxide:
METAL (N) HYDROXIDE

11. 5.- HYDROXIDES Me (OH)n METAL (N) HYDROXIDE Name Formule:
5.2. Oxidation number nomenclature (Stock system)
Hydroxides are combinations of a metal with -OH. The hydroxyl has oxidation number -1; the metal has a positive oxidation number.
(+N) (-1)
Me (OH)n
The name of the ELEMENT is placed first, followed by its the oxidation number if there are two or more possibilities Then the word HYDROXIDE is written.
Name Formule:
CuOH: Copper(I) hydroxide Lead(IV) hydroxide: Pb(OH)4
Au(OH)3: Gold(III) hydroxide Berilium hydroxide: Be(OH)2
Pt(OH)2: Platinum(II) hydroxide Lead (II) hydroxide: Pb(OH)2
LiOH: Litium hydroxide Copper(I) hydroxide: CuOH
Mg(OH)2: Magnesium hydroxide Copper(II) hydroxide: Cu(OH)2
Co(OH)2: Cobalt(II) hydroxide Cobalt(III) hydroxide: Co(OH)3
AuOH: Gold (I) hydroxide Potassium hydroxide: KOH
METAL (N) HYDROXIDE

12. 5.- HYDRÓXIDOS Me (OH)n HIDRÓXIDO DE METAL (N)
5.2. Nomenclatura de número de oxidacion (Sistema Stock)
(+N) (-1)
Me (OH)n
HIDRÓXIDO DE METAL (N)
Escribir la palabra HIDRÓXIDO, a continuación, la preposición DE y, por último, el nombre del ELEMENTO, cuyo número de oxidación se pone en números romanos y entre paréntesis. Si el elemento sólo tiene una valencia, no debe indicarse.
Nombra ; Formula:
CuOH: Hidróxido de plomo (IV):
Au(OH)3: Hidróxido de berilio:
Pt(OH)2: Hidróxido de plomo (II):
LiOH: Hidróxido de cobre (I):
Mg(OH)2: Hidróxido de cobre (II):
Co(OH)2: Hidróxido de cobalto (III):
AuOH: Hidróxido de potasio:

13. 5.- HYDRÓXIDOS Me (OH)n HIDRÓXIDO DE METAL (N)
5.2. Nomenclatura de número de oxidacion (Sistema Stock)
(+N) (-1)
Me (OH)n
HIDRÓXIDO DE METAL (N)
Escribir la palabra HIDRÓXIDO, a continuación, la preposición DE y, por último, el nombre del ELEMENTO, cuyo número de oxidación se pone en números romanos y entre paréntesis. Si el elemento sólo tiene una valencia, no debe indicarse.
Name Formule:
CuOH: Hidróxido de cobre (I) Hidróxido de plomo (IV): Pb(OH)4
Au(OH)3: Hidróxido de oro (III) Hidróxido de berilio: Be(OH)2
Pt(OH)2: Hidróxido de platino (II) Hidróxido de plomo (II): Pb(OH)2
LiOH: Hidróxido de litio Hidróxido de cobre (I): CuOH
Mg(OH)2: Hidróxido de magnesio Hidróxido de cobre (II): Cu(OH)2
Co(OH)2: Hidróxido de cobalto (II) Hidróxido de cobalto (III): Co(OH)3
AuOH: Hidróxido de oro (I) Hidróxido de potasio: KOH

14. 5.- HYDROXIDES Me (OH)n METAL (n+) HYDROXIDE SODIUM HYDROXIDE Na OH
5.3. Charge number nomenclature (Ewens-Basset system)
Hydroxides are combinations of a metal with -OH. The hydroxyl has oxidation number -1; the metal has a positive oxidation number.
(+N) (-1)
Me (OH)n
The name of the ELEMENT is placed first, followed by its the oxidation number if there are two or more possibilities using arabic numbers and “+”. Then the word HYDROXIDE is written.
METAL (n+) HYDROXIDE
SODIUM HYDROXIDE Na OH
NaOH Fe OH
Fe(OH)3
IRON(3+) HYDROXIDE OH
IRON(2+) HYDROXIDE Fe
Fe(OH)2 OH

15. 5.- HYDROXIDES Me (OH)n METAL (n+) HYDROXIDE
5.3. Charge number nomenclature (Ewens-Basset system)
Hydroxides are combinations of a metal with -OH. The hydroxyl has oxidation number -1; the metal has a positive oxidation number.
(+N) (-1)
Me (OH)n
The name of the ELEMENT is placed first, followed by its the oxidation number if there are two or more possibilities using arabic numbers and “+”. Then the word HYDROXIDE is written.
Co(OH)2: Lead(4+) hydroxide:
Co(OH)3: Berilium hydroxide:
Pb(OH)2: Platinum(2+) hydroxide:
AgOH: Platinum(4+) hydroxide:
Sn(OH)2: Cadmium hydroxide:
AuOH: Gold(3+) hydroxide:
METAL (n+) HYDROXIDE

16. 5.- HYDROXIDES Me (OH)n METAL (n+) HYDROXIDE
5.3. Charge number nomenclature (Ewens-Basset system)
Hydroxides are combinations of a metal with -OH. The hydroxyl has oxidation number -1; the metal has a positive oxidation number.
(+N) (-1)
Me (OH)n
The name of the ELEMENT is placed first, followed by its the oxidation number if there are two or more possibilities using arabic numbers and “+”. Then the word HYDROXIDE is written.
Co(OH)2: cobalt(2+) hydroxide Lead(4+) hydroxide: Pb(OH)4
Co(OH)3: cobalt(3+) hydroxide Berilium hydroxide: Be(OH)2
Pb(OH)2: lead(2+) hydroxide Platinum(2+) hydroxide: Pt(OH)2
AgOH: silver hydroxide Platinum(4+) hydroxide: Pt(OH)4
Sn(OH)2: tin hydroxide Cadmium hydroxide: Cd(OH)2
AuOH: gold(1+) hydroxide Gold(3+) hydroxide: Au(OH)3
METAL (n+) HYDROXIDE

17. 5.- HIDRÓXIDOS Me (OH)n HYDRÓXIDO DE METAL (n+)
5.3. Nomenclature de número de carga (Ewens-Basset)
(+N) (-1)
Me (OH)n
HYDRÓXIDO DE METAL (n+)
Escribir la palabra HIDRÓXIDO, a continuación, la preposición DE y, por último, el nombre del ELEMENTO, cuyo número de oxidación se pone en números arábigos con la carga positiva entre paréntesis. Si el elemento sólo tiene una valencia, no debe indicarse.
Co(OH)2: Hidróxido de plomo(4+):
Co(OH)3: Hidróxido de berilio:
Pb(OH)2: Hidróxido de platino(2+):
AgOH: Hidróxido de platino(4+):
Sn(OH)2: Hidróxido de cadmio:
AuOH: Hidróxido de oro(3+):

18. 5.- HIDRÓXIDOS Me (OH)n HYDRÓXIDO DE METAL (n+)
5.3. Nomenclature de número de carga (Ewens-Basset)
(+N) (-1)
Me (OH)n
HYDRÓXIDO DE METAL (n+)
Escribir la palabra HIDRÓXIDO, a continuación, la preposición DE y, por último, el nombre del ELEMENTO, cuyo número de oxidación se pone en números arábigos con la carga positiva entre paréntesis. Si el elemento sólo tiene una valencia, no debe indicarse.
Co(OH)2: Hidróxido de cobalto(2+) Hidróxido de plomo(4+): Pb(OH)4
Co(OH)3: Hidróxido de cobalto(3+) Hidróxido de berilio: Be(OH)2
Pb(OH)2: Hidróxido de plomo(2+) Hidróxido de platino(2+): Pt(OH)2
AgOH: Hidróxido de plata Hidróxido de platino(4+): Pt(OH)4
Sn(OH)2: Hidróxido de estaño Hidróxido de cadmio: Cd(OH)2
AuOH: Hidróxido de oro(1+) Hidróxido de oro(3+): Au(OH)3