Download Homework Sec 8_2 electron dot structures

Name: ______________________________________________
General Chemistry
Homework: Section 8.2 Electronegativity & Electron Dot Structure
Reference: Table 6.2, pg. 181 in textbook for Electronegativity Values
Per: _______
Dr. L. O’Reilly
Question I.
For each of the following pairs of atoms:
a) Draw an arrow to designate the direction to which the electrons participating in the covalent
bond are pulled
and
b) Using the appropriate symbol (from the Greek alphabet), designate the partial charge on each
atom in the pair when they are sharing electrons in a covalent bond.
Pair of Atoms
H-Br
F-N
O-C
Cl-F
Direction in which electrons Partial charges
are pulled
H-Br
 
H-Br
Name: _______________________________________________
Question II.
Use the guide handed out in class to write the electron dot structures of the following molecules.
Please show your work below.
Place each of your electron dot structures in the appropriate box on the next page.
For each molecule, circle the electron pairs in your dot structure that would be considered the
‘lone pair(s)”.
STEP 2
(Total Number of Val. Electrons)
a. PH3
b. SCl2
c. F2
d. HI
e. NCl3
STEP 4
(#Used)
STEP 5
(left to distribute)
Name: ______________________________________________________
PH3
SCl2
F2
HI
NCl3