The correct order of bond length for CO, CO2, CO3 2-(carbonate) is:


why?

3 years ago

Share

Answers : (1)

                                        

When we consider a bond between two atoms, the type of bond gives a relative measure of the bond length.

Triple Bond Strongest, 3 electron pairs shared, shortest bond
Double Bond Middle, 2 electron pairs shared
Single Bond Weakest, 1 electron pair shared, longest bond


We need to determine the bond types for each molecule or ion:

CO, When drawing the lewis structure here, we end up with a triple bond between the carbon and the oxygen (and a -1 charge on the C and a +1 charge on the O)

CO2 This lewis structure gives one double bond between each oxygen and the carbon.

[CO3]2- This one is a little trickier, but when we draw the lewis structure for this ion, we get a double bond between one oxygen and the carbon, with single bonds between the other two oxygen atoms and the carbon. Because each of the oxygens want a double bond to the carbon, they all fight over it (giving resonance structures), meaning that in the end, you get a bond something between a double and a single bond for each Carbon-Oxygen bond. Therefore, this bond will be longer than a single bond, but shorter than a double bond:

So, this give the following increasing order of bond length:

[CO3]2-, CO2, CO

3 years ago

Post Your Answer

More Questions On Physical Chemistry

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
science
 
 
please mention your query clearly.
 
bharat makkar one month ago
Wat is Graham's law of diffusion????
 
 
Graham's law states that the rate of diffusion of a gas is inversely proportional to the square root of its molecular weight as the molecular weight of a molecule increases, the rate of...
 
Ashwin 12 days ago
stationary orbits give energy to electrons then who will give energy to stationery orbits
 
 
Dear student, The stationary orbits donot give energy to electrons. It is the presence of electrons in certain energy shells/orbits makes the electrons in those orbits possess that energy....
  img
Sumit Majumdar one month ago
 
no in stationary orbit the enegy of electron is quantised.because the angular momentum(mvr) is directly proportional to n(orbit) En= -13.6z^2/n^2 thanks and regards sunil kr askIITian...
  img
Sunil Kumar FP 2 months ago
molten alluminum chloride is electrolysed using a current of 0.5A to produce 27g of alluminum calculate the number of faradays of electricity consumed
 
 
molten alluminum chloride is electrolysed using a current of 0.5A to produce 27g of alluminum therefore the number of faradays of electricity consumed AL^3+ 3e- ------Al 1 mole is deposited...
  img
Sunil Kumar FP one month ago
the order of screening effect of electrons of s p d f of a given shell of an atom on its outer shell electrons is ______________
 
 
It is described as a decrease in shielding effort between the nucleus and last orbital due to electrons present between them i.e., greater the screening effect, easier the removal of...
  img
Sunil Kumar FP 12 days ago
what is chiral carbon???
 
 
a carbon atom has four valence electron or we can say its valency is four means it will form four single covalent bonds and when all these for covalent bond is satisfied by four different...
 
rishabh 11 months ago
 
it is the carbon atom in the "center" of the molecule, it is the carbon atom to which 4 different atoms or groups of atoms are attatched. in amino acids, for example, there is a central...
 
Wanishahid 7 months ago
 
A chiral compound is a compound which is sp3 hybridised and is attached with four atom with a single bond. A chiral compound has ''chiral centers'' or ''sterio genic centers''.
 
BODDOJU RAMA KRISHNACHARI 10 months ago
View all Questions »