Identifying compounds as ionic,
covalent, or acids from their formula
Because we use different systems to name ionic
ionic, covalent,
covalent
or acid compounds from their formulas, the first thing you must
be able to do,, is to look at a formula and identifyy which of these
three classes your compound belongs to.
I i Compounds
Ionic
C
d
Combination of a metal and a non-metal
Metals – Left half and center of periodic table
Non-metals – Upper right of periodic table
I i Compounds
Ionic
C
d
Non-metals
1A
H
Li
8A
He
2A
3A
4A
5A
6A
7A
Be
B
C
N
O
F
Ne
Al
Si
P
S
Cl
Ar
Na Mg
TransitonMetals
K
Ca
Sc
Ti
Rb
Sr
Y
Cs
Ba La*
Fr
Ra
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
Ga Ge As
Se
Br
Kr
Zr
Nb Mo
Tc
Ru
Rh
Pd
Ag
Cd
In
Sn
Sb
Te
I
Xe
Hf
Ta
Re
Os
Ir
Pt
Au
Hg
Tl
Pb
Bi
Po
At
Rn
Tb
Dy
Ho
Er
Tm
Yb
Lu
Pu Am Cm Bk
Cf
Es
Fm Md No
Lr
W
Ac*
Unq Unp Unh Uns Uno Une Uun Uuu
*
Lathanides*
Ce
Pr
Actinides**
Th
Pa
Metals
Nd Pm Sm Eu
U
Np
Gd
I i Compounds
Ionic
C
d
The metal will always be the first element in the name
Th non metal
The
t l will
ill always
l
be
b the
th last
l t element
l
t in
i the
th name
Examples:
NaCl
CaO
MgSO4
KMnO4
Metal
Na
Ca
Mg
K and Mn
Non-metals
Non
metals
Cl
O
S and O
O
C l Compounds
Covalent
C
d
Will contain ONLY non metals
Only elements from here
1A
H
Li
8A
He
2A
3A
4A
5A
6A
7A
B
Be
B
C
N
O
F
N
Ne
Al
Si
P
S
Cl
Ar
Na Mg
TransitonMetals
K
Ca
Sc
Ti
Rb
Sr
Y
Cs
Ba La*
Fr
Ra
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
Ga Ge As
Se
Br
Kr
Zr
Nb Mo
Tc
Ru
Rh
Pd
Ag
Cd
In
Sn
Sb
Te
I
Xe
Hf
Ta
Re
Os
Ir
Pt
Au
Hg
Tl
Pb
Bi
Po
At
Rn
Tb
Dy
Ho
Er
Tm
Yb
Lu
Pu Am Cm Bk
Cf
Es
Fm Md No
Lr
W
Ac*
Unq Unp Unh Uns Uno Une Uun Uuu
*
Lathanides*
Ce
Pr
Actinides**
Th
Pa
Nd Pm Sm Eu
U
Np
Gd
C l Compounds
Covalent
C
d
Examples:
E
l
N2
H2 O
CO2
SF6
P2S5
A id
Acids
First element is H
Examples
HCl
HNO3
H2SO4
H3PO4
Only exception – water – H2O
Q i
Quiz
Classify the following compounds as ionic, covalent, or acids
PtO2
CF2Cl2
HClO4
NaNO3
Sr(OH)2
N2F4
HBr
Q i A
Quiz-Answers
PtO2
CF2Cl2
HClO4
NaNO3
Sr(OH)2
N2F4
HBr
Ionic
Covalent
Acid
Ionic
Ionic
Covalent
Acid
Metal (Pt) and nonmetal (O)
All non metals
H is first element
Metal (Na) and nonmetals (N,O)
Metal (Sr) and nonmetals (O,H)
All non metals
H is first element