Draw the Lewis Dot for each of the following elements:
Rb
Al
Mg
Ne
Be
N
S
Ba
Li
Br
P
He
C
Se
For the following compounds indicate ionic (I) or
covalent (C) on the left line.
On the right line indicate transferred (T) or shared (S)
electrons.
_____ 1.
CO2
_____
_____ 2.
MgO
_____
_____ 3.
KF
_____
_____ 4.
Br2
_____
_____ 5.
NO2
_____
_____ 6.
LiBr
K
For each of the following indicate how many atoms of
each is present:
CH4
HC2H3O2
_____ C
_____ H
_____ H
_____ C
_____ O
HC2H3O2
Ca(NaO3)2
_____ H
_____ Ca
_____
_____ C
_____ Na
_____ 7.
Na2O _____
_____ O
_____ O
_____ 8.
NO
_____
_____ 9.
SO2
_____
Be(NO3)2
2NH4ClO3
_____ 10.
CaI
_____
_____ Be
_____ N
_____ 11.
NH4
_____
_____ N
_____ Cl
_____ O
_____ H
_____ 12.
HNO3 _____
_____ 13.
CaF2
_____ 14.
SnCl3 _____
_____ 15.
PO4
_____ O
_____
_____
3(NH4)2SO4
2NaH(CO3)2
_____ H
_____ O
_____ N
_____ H
_____ O
_____ C
_____ S
_____ Na
Determine the Oxidation Number of:
K
Na
Cl
N
S
C
Mg
Ar
O
F
Writing Chemical Formulas – More Practice
Elements to Combine
Magnesium and iodine
Potassium and sulfur
Aluminum and chlorine
Zinc(II) and bromine
Strontium and oxygen
Sodium and sulfur
Strontium and iodine
Barium and nitrogen
Beryllium and nitrogen
Rubidium and fluorine
Francium and phosphorous
Cobalt(II) and Oxygen
Chromium (II) and sulfur
Element symbols with
Oxidation Numbers
Final Chemical Formula