Using the molecular orbital model, write electron configurations for the following diatomic species and calculate the bond order
s. Which ones are paramagnetic? Place the species in order of increasing bond length and bond energy.
a. CN +
b. CN
c. CN -
a. CN +
b. CN
c. CN -
1 answer:
Answer:
Bond orders
CN- =3
CN+ =2.5
CN =2
CN+ is paramagnetic
The order of increasing bond energy is CN <CN+ <CN-
The order of increasing bond length is CN- <CN+ <CN
Explanation:
The molecular orbital diagram of CN- is shown in the image attached. From that image, it is easy to deduce the bond order of the other related species. Bond length is in the reverse order as bond energy because the shorter the bond, the greater the bond energy. The specie with the highest bond order has the highest bond energy.
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Answer: will have a greater partial charge.
Explanation:
A polar covalent bond is defined as the bond which is formed when there is a low difference of electronegativities between the atoms, thus resulting in charge difference. Example:
Non-polar covalent bond is defined as the bond which is formed when there is no difference of electronegativities between the atoms and thus there is no charge difference. Example:
Ionic bond is formed when there is complete transfer of electron from a highly electropositive metal to a highly electronegative non metal. The electronegative difference between the elements is high. The charges on cation and anion neutralise each other. Example:
Thus as will have greater partial charge.