e) PH DOCI 2) N₂H₂ Number of total valence electrons: (show work for calculation) Number of total valence electrons: (show work for calculation) Number of total valence electrons: (show work for calculation) Lewis structure: Lewis structure: Lewis structure:

Chemical Principles in the Laboratory
11th Edition
ISBN:9781305264434
Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi
Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi
Chapter13: The Geometrical Structure Of Molecules-an Experiment Using Molecular Models
Section: Chapter Questions
Problem 4ASA: a. How many sticks did you need to make the skeleton structure?____________ b. How many sticks are...
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3. Draw Lewis structures (electron-dot structures) for the following molecules and molecular ions. Calculate
the total number of valence electrons for each molecule/ molecular ion.
RECALL the guidelines for drawing a Lewis structure (
Step 1: Count the total valence electrons (add or subtract electrons as necessary for negative/ positive chargesj
Step 2: Connect atoms to draw the skeleton of the molecule
Step 3: Assign electrons to the terminal atoms and fulfill the octets of terminal atoms (a duet for hydrogen)
Step 4: Assign any remaining electrons to the central atom
Step 5: Draw multiple bonds when necessary if the central atom does not yet have an octet
a) example
OF 2
Number of total valence
electrons:
(show work for calculation)
O has 6 valence electrons
Each F has 7 valence electrons
Total = (1 x 6) + (2 x 7)
= 20 valence electrons
Lewis structure:
..
OR
F-0-F OF:0:F
Transcribed Image Text:3. Draw Lewis structures (electron-dot structures) for the following molecules and molecular ions. Calculate the total number of valence electrons for each molecule/ molecular ion. RECALL the guidelines for drawing a Lewis structure ( Step 1: Count the total valence electrons (add or subtract electrons as necessary for negative/ positive chargesj Step 2: Connect atoms to draw the skeleton of the molecule Step 3: Assign electrons to the terminal atoms and fulfill the octets of terminal atoms (a duet for hydrogen) Step 4: Assign any remaining electrons to the central atom Step 5: Draw multiple bonds when necessary if the central atom does not yet have an octet a) example OF 2 Number of total valence electrons: (show work for calculation) O has 6 valence electrons Each F has 7 valence electrons Total = (1 x 6) + (2 x 7) = 20 valence electrons Lewis structure: .. OR F-0-F OF:0:F
3:06
e) PHA
OCI-
Number of total valence
electrons:
(show work for calculation)
Number of total valence
electrons:
(show work for calculation)
Number of total valence
electrons:
g) N₂H₂
(this molecule has (show work for calculation)
a double bond)
of total
Number of total valence
electrons:
b) CH₂CH₂NH₂
(this molecule has (show work for calculation)
a C chain)
Lewis structure:
Lewis structure:
Lewis structure:
Lewis structure:
Transcribed Image Text:3:06 e) PHA OCI- Number of total valence electrons: (show work for calculation) Number of total valence electrons: (show work for calculation) Number of total valence electrons: g) N₂H₂ (this molecule has (show work for calculation) a double bond) of total Number of total valence electrons: b) CH₂CH₂NH₂ (this molecule has (show work for calculation) a C chain) Lewis structure: Lewis structure: Lewis structure: Lewis structure:
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