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 charges 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 b) CH₂Cl₂ c) BiH3 d) COF₂ 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 Number of total valence electrons: (show work for calculation) Number of total valence electrons: (show work for calculation) Number of total valence Lewis structure: F-0-F OF:0:F Lewis structure: Lewis structure: Lewis structure:
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 charges 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 b) CH₂Cl₂ c) BiH3 d) COF₂ 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 Number of total valence electrons: (show work for calculation) Number of total valence electrons: (show work for calculation) Number of total valence Lewis structure: F-0-F OF:0:F Lewis structure: Lewis structure: Lewis structure:
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Formal Charges
Formal charges have an important role in organic chemistry since this concept helps us to know whether an atom in a molecule is neutral/bears a positive or negative charge. Even if some molecules are neutral, the atoms within that molecule need not be neutral atoms.
Polarity Of Water
In simple chemical terms, polarity refers to the separation of charges in a chemical species leading into formation of two polar ends which are positively charged end and negatively charged end. Polarity in any molecule occurs due to the differences in the electronegativities of the bonded atoms. Water, as we all know has two hydrogen atoms bonded to an oxygen atom. As oxygen is more electronegative than hydrogen thus, there exists polarity in the bonds which is why water is known as a polar solvent.
Valence Bond Theory Vbt
Valence bond theory (VBT) in simple terms explains how individual atomic orbitals with an unpaired electron each, come close to each other and overlap to form a molecular orbital giving a covalent bond. It gives a quantum mechanical approach to the formation of covalent bonds with the help of wavefunctions using attractive and repulsive energies when two atoms are brought from infinity to their internuclear distance.
Question
Continuation
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
b) CH₂Cl₂
c) BiH3
d) COF₂
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
Number of total valence
electrons:
(show work for calculation)
Number of total valence
electrons:
(show work for calculation)
Number of total valence
Lewis structure:
F-O-F OF:0:F
Lewis structure:
Lewis structure:
Lewis structure:
Transcribed Image Text:e) PH4+
f) OCI-
g) N₂H₂
(this molecule has
a double bond)
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)
h) CH3CH₂NH2 Number of total valence
electrons:
(this molecule has (show work for calculation)
a C chain)
Lewis structure:
Lewis structure:
Lewis structure:
Lewis structure:
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