Naming Ionic Compounds and Formulas
Naming Ionic Compounds
Ions and salts
•
Ions can be single atoms, as the sodium and
chlorine in common table salt (sodium
chloride), or more complex (polyatomic)
groups such as the carbonate in calcium
carbonate
•
An ionic bond, one ‘bonder’ must have a
positive charge and the other a negative one
•
Most cations and anions can combine to form solid
compounds that are usually known as
salts
and their
net charge must be neutral
Naming Ionic
Compounds
Naming Ionic
Compounds
Try naming the Compounds!
•
KCl
•
MgO
•
AlCl
3
•
CaF
2
Determining the formula for Magnesium Fluoride?
•
Identify the charges =
Mg
2+
F
-1
•
Cross the Charges,
Mg
2+
F
-1
=
Mg
1
F
2
•
If the subscript is a 1 it does not need to be written.
•
If there is a common subscript such as 2 as in
Mg
2
O
2
, reduce it to
Mg
1
O
1
which is also
MgO
.
Try it!
•
Sodium Chloride
•
Aluminum Chloride
•
Magnesium Nitride
Stop
Ionic compounds With Metals
Iron (III) indicates a +3 charge
Lead (V) indicates a +5 charge
Name to Formula
Nickel (II) Chloride
Cr (IV) Oxide
Formula to Name
Fe
2
O
3
Y
3
N
3
Ions and salts play a crucial role in forming solid compounds known as salts. By following specific rules, you can name ionic compounds based on the cation and anion present. Determining formulas involves identifying charges and balancing them. Explore the process through examples like KCl, MgO, AlCl3, CaF2, and more.
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Presentation Transcript
Ions and salts Ions can be single atoms, as the sodium and chlorine in common table salt (sodium chloride), or more complex (polyatomic) groups such as the carbonate in calcium carbonate An ionic bond, one bonder must have a positive charge and the other a negative one Most cations and anions can combine to form solid compounds that are usually known as salts and their net charge must be neutral
ionic compound is named first by its cation and then by its anion Naming Ionic Compounds For example, K+1 is called the potassium ion, just as K is called the potassium atom cation has the same name as its element
anion is named by taking the elemental name, removing the ending, and adding -ide For example, F-1 is called fluoride, for the elemental name, fluorine. -ine was removed and replaced with -ide Naming Ionic Compounds To name a compound, the cation name and the anion named are added together For example, NaF is also known as sodium fluoride
Try naming the Compounds! KCl MgO AlCl3 CaF2
Determining the formula for Magnesium Fluoride? Identify the charges = Mg2+ F-1 Cross the Charges, Mg2+F-1 If the subscript is a 1 it does not need to be written. If there is a common subscript such as 2 as in Mg2O2, reduce it to Mg1O1which is also MgO. = Mg1F2
Try it! Sodium Chloride Aluminum Chloride Magnesium Nitride
Ionic compounds With Metals Iron (III) indicates a +3 charge Lead (V) indicates a +5 charge
Name to Formula Nickel (II) Chloride Cr (IV) Oxide
Formula to Name Fe2O3 Y3N3
