Question

In: Chemistry

1. First you need to find the number of valence electrons in CH3Cl.


1. First you need to find the number of valence electrons in CH3Cl. For counting purposes with Lewis structures, the number of valence electrons in an atom of a main group element is equal to the last digit in the group number of that element in the Periodic Table. C is in Group ____________ H is in Group ____________ Cl is in Group ____________ In NH2Cl there is a total of ____________ valence electrons.

2. The model consists of balls and sticks. How many holes should be in the ball you select for the C atom? ____________ the H atoms? ____________ the Cl atom? ____________ The electrons in the molecule are paired, and each stick represents a valence electron pair. How many sticks do you need? ____________

3. Assemble a skeleton structure for the molecule, connecting the balls and sticks to make one unit. Use the rule that C atoms form 4 bonds, whereas Cl and H atoms usually form only one. Draw a sketch of the skeleton below:

4. How many sticks did you need to make the skeleton structure?____________ How many sticks are left over? ____________ If your model is to obey the octet rule, each ball must have four sticks in it (except for hydrogen atom balls, which need and can only have one). (Each atom in an octet rule species is sur- rounded by four pairs of electrons.) How many holes remain to be filled?____________ Fill them with the remaining sticks, which represent nonbonding electron pairs. Draw the complete Lewis structure for CH3Cl using lines for bonds and pairs of dots for nonbonding electrons.

5. Describe the geometry of the model, which is that of CH3Cl. ____________ Is the CH3Cl molecule polar? ____________ Why? Would you expect CH3Cl to have any isomeric forms? ____________ Explain your reasoning.

6. Would CH3Cl have any resonance structures? ____________ If so, draw them below.

Solutions

Expert Solution

1. First you need to find the number of valence electrons in CH3Cl. For counting purposes with Lewis structures, the number of valence electrons in an atom of a main group element is equal to the last digit in the group number of that element in the Periodic Table. C is in Group ____4th________ H is in Group __1st__________ Cl is in Group _____7th_______ In NH2Cl there is a total of ____14________ valence electrons.

2. The model consists of balls and sticks. How many holes should be in the ball you select for the C atom? _______4_____ the H atoms? _____1_______ the Cl atom? ____1________ The electrons in the molecule are paired, and each stick represents a valence electron pair. How many sticks do you need? _____7_______

3. Assemble a skeleton structure for the molecule, connecting the balls and sticks to make one unit. Use the rule that C atoms form 4 bonds, whereas Cl and H atoms usually form only one. Draw a sketch of the skeleton below:

4. How many sticks did you need to make the skeleton structure?___4_________ How many sticks are left over? ______3______ If your model is to obey the octet rule, each ball must have four sticks in it (except for hydrogen atom balls, which need and can only have one). (Each atom in an octet rule species is sur- rounded by four pairs of electrons.) How many holes remain to be filled?____3________ Fill them with the remaining sticks, which represent nonbonding electron pairs. Draw the complete Lewis structure for CH3Cl using lines for bonds and pairs of dots for nonbonding electrons.

5. Describe the geometry of the model, which is that of CH3Cl. ___tetrahedral_________ Is the CH3Cl molecule polar? _____no_______ Why? Would you expect CH3Cl to have any isomeric forms? ___no_________ Explain your reasoning.

6. Would CH3Cl have any resonance structures? ___no_________ If so, draw them below.


Related Solutions

1. First you need to find the number pf valence electrons on NH2Cl for counting purposes...
1. First you need to find the number pf valence electrons on NH2Cl for counting purposes with lewis structures the number of valence electrons in an atom of a main group element is equal to the last digit in the group number of that element of that element in the periodic table. N is in group__ h is in group __ Cl is in group___ in NH2Cl there is a total of __ valence electrons. 2. the model consists of...
To find the oxidation number for a molecule, you use the equation (# of valence electrons)...
To find the oxidation number for a molecule, you use the equation (# of valence electrons) - (# of credited electrons) Ex- C2O Valence electrons- 4 Credited electrons-3 4-3= 1 +I oxidation What is a “credited” electron and how do you find them?
1)Describe the process you would go through to find the number of valence electrons for any...
1)Describe the process you would go through to find the number of valence electrons for any of the main group (columns 1-8) elements.2) Although both sugar and salt are soluble in water, the way in which they dissolve is different. Explain how their dissolving process is different and elaborate why these differences exist. 3)Do you think one gram of sucrose or one gram of sodium chloride will melt at a higher temperature? Explain your answer. 4) Using chemical nomenclature name...
1 What is the total number of valence electrons in the Lewisstructure of O3?electrons...
1 What is the total number of valence electrons in the Lewis structure of O3?   2 Draw a Lewis structure for O3.
1 What is the total number of valence electrons in the Lewis structure of ClO4-? electrons...
1 What is the total number of valence electrons in the Lewis structure of ClO4-? electrons 2 Draw a Lewis structure for ClO4-.
I'm not sure how to get these answers. I need the number of valence electrons, formal...
I'm not sure how to get these answers. I need the number of valence electrons, formal charge, electron group geometry, molecular geometry, and if there is resonance for each of the following. AlBr2I PbH2I2 TIAtI2 TIBr2I PbAt2Cl2
Predict the number of valence electrons in an atom of beryllium.
Predict the number of valence electrons in an atom of beryllium. Enter your answer in the provided box.
1 What is the total number of valence electrons in the Lewis structure of PO(OH)3? electrons...
1 What is the total number of valence electrons in the Lewis structure of PO(OH)3? electrons 2 Draw a Lewis structure for PO(OH)3.
1. How many valence electrons are in the following molecules? 2. What is the number of...
1. How many valence electrons are in the following molecules? 2. What is the number of bonding groups, lone electron pairs, and electron groups around the central atom of the following molecules? 3. What is the electron geometry of the following molecules?, 4. What is the molecular geometry (shape) of the following molecules? H2O SO2 ClF3 SF6 5. If the following atoms are connected by a covalent bond, which atom would be expected to have a fractional (partial) negative charge?...
“Valence electrons” are electrons in the outermost shell of an atom. How many valence electrons does...
“Valence electrons” are electrons in the outermost shell of an atom. How many valence electrons does an aluminum atom have?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT