Question

the crct order of increasing CO bond length of CO,CO32-and CO2​

Answer 1

Answer:

Method (1) Bond-multiplicity increases bond-length.

Thus,

(i) C≡)→ has least bond-length.

(ii) O=C+O→ next to C=O.

(iii)

Hence, increasing order of bond-length is CO<CO

2

<CO

3

2−

Method (2)

(i) More be the value of bond-order smaller be the bond-length and more be the bond-energy.

(ii) Bond-order (BO)=

Total number of canonical forms

Total number of bonds associated between two atoms in all structure

(a) CO→C≡O→BO=

1

3

=3

(b) CO

2

→O=C=C→BO=

2

4

=2

Hence, order of bond-length CO<CO

2

<CO

3

2−

Epimer is used to designate diastereomers that differ in configuration at only one chiral centre.