Naming Ions
What is an ion?
an atom with a charge
What is a binary compound?
a compound composed of two elements that can be either ionic or molecular
When the name of the anion ends in -ide and there is no oxygen present, the acid name begins with the prefix ______ the stem of the anion has the suffix _____, and is followed by the word acid.
hydro, -ic
What happens to electrons in a covalent bond?
What is shared
What is an acid?
a compound that contains one or more hydrogen atoms
What is a polyatomic ion?
An ion composed of more than one atom behaving as one unit and has only one oxidation number
To name any binary ionic compound, place the ______ name first, followed by the ______ name.
cation, anion
When the anion name ends in -ite, the acid name is the stem of the anion with the suffix _____, followed by the word acid.
-ous
An -ide ending generally indicates a
binary compound
Why to atoms bond?
to become more chemically stable.
When the metals in Groups 1A, 2A, and 3A lose electrons, they form cations with positive charges equal to their ...
group number
How do you write the formula for a binary ionic compound?
Write the symbol of the cation and then the anion, add the subscripts needed to balance the charges.
When the anion name ends in -ate, the acid name is the stem of the anion with the suffix ____ followed by the word acid.
-ic
An -ite or -ate ending means a polyatomic ion that includes which element in its formula?
oxygen
What type of bonding is associated with high melting points and forms cyrstalline solids?.
ionic
The charges of cations of many transition metal ions must be determined from the number of _____ lost
electrons
A prefix in the name of a binary molecular compound tells...
how many atoms of an element are present in each molecule of the compound.
How many oxidation states are in most transition metals?
2
Prefixes in a name generally indicate that the compound is ...
molecular or covalent
What type of bonds form when opposite ions attract.
ionic
The names of most polyatomic anions end in ____ or ____.
-ite, -ate
How do you write a formula for a molecular (covalent) compound?
use the prefixes in the name to tell you the subscript of each element in the formula, then write the correct symbols for the two elements with the appropriate subscripts.
A Roman numeral after the name of a cation shows ...
the ionic charge of the cation.
Why are prefixes necessary in naming covalent compounds?
So you know how many atoms there are in each element of a covalent bond.
Name the compounds CuBr2, SCl2, BaF2. Explain the use or omission of the Roman numeral (II) and the prefix di-
CuBr2 Copper(II) bromide *roman numeral is used when there is a transition metal (Cu) SCl2 Sulfur dichloride *"di-" is used when there are two nonmetals paired BaF2 Barium fluoride *this does not have "di-" because it is a metal and a nonmetal