1 answer

How does VSEPR work?

Question:

How does VSEPR work?

Answers

The key idea in #"VSEPR"# is that electron pairs, bonding and non-bonding, arrange themselves in the most electrostatically favourable orientation.

Explanation:

So if there are 2 electron pairs around a central atom, a linear molecule will result; if there are 3 electron pairs around a central atom, the electron pairs will arrange themselves in a trigonal plane; and if there are 4 electron pairs around a central atom, the electron pairs will assume a tetrahedral shape.

The important proviso, however, is that we do not describe molecular on the basis of electron pairs, but on the basis of bonds. Around carbon in methane there are 4 electron pairs in #4xxC-H# bonds, which assume the shape of tetrahedron; hence we describe the structure of methane as a tetrahedron.

On the other hand, around the oxygen atom in water there are also 4 electron pairs, #2xxO-H# bonds, and two oxygen lone pairs. Now the orientation of these electron pairs about oxygen ALSO assumes a tetrahedral shape, as the shape that minimizes interaction between the electron pairs.

But we describe molecular geometry on the basis of bonding pairs, not lone pairs. The #/_H-O-H# bond is tetrahedral to a first approximation, but interaction from the lone pairs compress #/_H-O-H# to approx. #105^@# down from #109.5^@#, and the water molecule is described as bent.

Now the shapes of the electron pairs mirror that of the Platonic solids: 2 electron pairs, linear; 3 electron pairs, trigonal planar; 4 electron pairs, tetrahedral; 5 electron pairs, trigonal bipyramidal; 6 electron pairs, octahedral. Whether the molecules assume these shapes depends on the number of bonding and lone pairs, but it is fairly straightforward to predict molecular geometry on the basis of #"VESPER"#.

There should be many examples of well-answered questions on this topic on these boards. Good luck finding them.

.

Similar Solved Questions

1 answer
Draw a structural formula for the intermediate in the following reaction: o CH2Cl2 + Br? CHçck,...
Draw a structural formula for the intermediate in the following reaction: o CH2Cl2 + Br? CHçck, Br2 • You do not have to consider stereochemistry • You do not have to explicitly draw H atoms. . Do not include counter-ions, e.g., Na+, 1', in your answer. ChemDoodle Pray...
1 answer
How many protons, neutrons and electrons are in an atom of Ba 138?
How many protons, neutrons and electrons are in an atom of Ba 138?...
1 answer
Answer each of the following question about the given the 3-dimensional surfaces x + y² +22...
Answer each of the following question about the given the 3-dimensional surfaces x + y² +22 = 20 and 2 = x² + y². (2 pt) A) What quadric surfaces are represented by these equations? Give any details you can. x² + y2 + z = 20 := x2 + y2 (2 pt) B Make a sketch, nothing fancy just a...
1 answer
Write a program in Java that will simulate FCFS (First Come First Serve) considering context switching...
Write a program in Java that will simulate FCFS (First Come First Serve) considering context switching is 0. The program should compute waiting time and turnaround time of every job as well as the average waiting time and average turnaround time. Then change the context switching time to 0.4 millise...
1 answer
1. Assurning a long-term construction project makes an overall profit, during the interim years, percentage of...
1. Assurning a long-term construction project makes an overall profit, during the interim years, percentage of completion method accounting has impact on construction company's: Income Statement ONLY X Balance Sheet ONLY BOTH Income Statement and Balance Sheet None of the above 2. When a company...
1 answer
What is #(6-(-5)-(-5))(-3)#?
What is #(6-(-5)-(-5))(-3)#?...
1 answer
2. Red company manufactures two products, Alfa and Beta, using the following productive factors: PRODUCT X...
2. Red company manufactures two products, Alfa and Beta, using the following productive factors: PRODUCT X PRODUCT Y Standard Standard Standard price quantity (unit) Standard price quantity (unit) Raw material (kg) 10 12 30 25 Direct Labor 40 50 1000 Produced volume 250 To produce Alfa and Beta the ...
1 answer
Simplifing expressions
how do u solve 2.7 + 3.6 * 4.5...
1 answer
For the following reaction draw in the a) reagents and curly arrows needed as well as...
For the following reaction draw in the a) reagents and curly arrows needed as well as the products b) draw in the carbocation leading to the respective product in the energy diagram below. c) Explain why the major product forms to a greater degree based upon the reaction coordinate diagram. 1. less ...
1 answer
7. A parallel plate capacitor has the space between plates filled with two slabs of dielectric...
7. A parallel plate capacitor has the space between plates filled with two slabs of dielectric (same size) with constants ki and ką. Show that the capacitances are C = 289A K; $2 for the left one and C d *y+ C = 91 Ni+2 for the right one, where d is the total spacing between plates....
1 answer
A company will need $25,000 in 7 years for a new addition to meet this gow,...
A company will need $25,000 in 7 years for a new addition to meet this gow, the company deposits money in an account today at Invested to total $25,000 in 7 years, 125 W restor a nt The company should invest $ (Do not round until the final answer. Thon round to the nearest cont as needed)...
1 answer
Consider a retirement plan that pays 50000 a year for 15 years. The interest rate in...
Consider a retirement plan that pays 50000 a year for 15 years. The interest rate in the economy is 4%. a. What is (actuarilly fair) price of the retirement plan? b. If instead of the retirement plan you wish to put your money in a savings account that pays you 3% annually, how much money would you ...
1 answer
We collected a sample of the prices of new homes. The mean of our sample is...
We collected a sample of the prices of new homes. The mean of our sample is $255,000, with a standard deviation of $19,000. Calculate the z-scores of each of the given prices. Determine if the they are usual or unusual. Round up each z-score to two decimals. (a) $275, 000 (b) $230,000 (c) $210,000 (...
1 answer
Direct Labor Variances Greeson Clothes Company produced 17,000 units during June of the current year. The...
Direct Labor Variances Greeson Clothes Company produced 17,000 units during June of the current year. The Cutting Department used 3,200 direct labor hours at an actual rate of $13.50 per hour. The Sewing Department used 5,300 direct labor hours at an actual rate of $13.20 per hour. Assume that there...
1 answer
Very urgent
Walter Industries has $5 billion in sales and $1.7 billion infixed assets. Currently, the company’s fixed assets areoperating at 90 percent of capacity.a.What level of sales could WalterIndustries have obtained if it had been operating at fullcapacity?b.What is Walter’s target fixedasset...
1 answer
22) What is the list price of an article that is subject to discounts of 23.25%,...
22) What is the list price of an article that is subject to discounts of 23.25%, 11.2%, 4% if the net price is $664.88?...
1 answer
A fair survey question is c ps//primaverahs.strongmind.com/courses/2724/assignments/490663?module item_id- 1341383 A cable TV company sends a customer...
A fair survey question is c ps//primaverahs.strongmind.com/courses/2724/assignments/490663?module item_id- 1341383 A cable TV company sends a customer satisfaction survey to all f ts customers via email. Customers who complete the survey receive a $5 credit to their account Part A: Which sampling me...
1 answer
1A) A large supermarket carries four qualities of ground beef. Customers are believed to purchase...
1A) A large supermarket carries four qualities of ground beef. Customers are believed to purchase these four varieties with probabilities of 0.13, 0.16, 0.13, and 0.58, respectively, from the least to most expensive variety. A sample of 482 purchases resulted in sales of 46, 151, 88, and 197 of the ...