70. Thecorrect order of increasing C-O bond length of Co, Co3 , co,is(

1.	70. Thecorrect order of increasing C-O bond length of Co, Co3 , co,is(a) CO 2-<CO,-CO(c) CO <CO3<CO2Which of the following statements about LiCi and NaCl is wrong?(a) LiCi has lower melting point that NaCI(b) LiCl dissolves more in organic solvents whereas NaCl does not(c) LiCl would ionise in water more than NaCi(d) Fused Li act(b) COCoCO(d) CO Co CO71.Cl would be less conducting than fused N
Answer» bond length is inversly proportional to bond order. and bond order = no. of bonds shared between two atoms on average.. so, CO has bond order = 3 CO2 has bond order = 2 and (CO3)²- has bond order = 1.333 so, bond length will be CO3²- > CO2> CO. 2. option 3 is wrong.

70. Thecorrect order of increasing C-O bond length of Co, Co3 , co,is(a) CO 2-<CO,-CO(c) CO <CO3<CO2Which of the following statements about LiCi and NaCl is wrong?(a) LiCi has lower melting point that NaCI(b) LiCl dissolves more in organic solvents whereas NaCl does not(c) LiCl would ionise in water more than NaCi(d) Fused Li act(b) COCoCO(d) CO Co CO71.Cl would be less conducting than fused N

Answer»

bond length is inversly proportional to bond order.

and bond order = no. of bonds shared between two atoms on average..

so, CO has bond order = 3 CO2 has bond order = 2 and (CO3)²- has bond order = 1.333

so, bond length will be CO3²- > CO2> CO.

2. option 3 is wrong.