Question

Which of the following is incorrect statement regarding A ($\left[Co\right(en{)}_{2}C{l}_2{]}^{+}$) and B ($\left[Co\right(N{H}_3{)}_{4}C{l}_2{]}^{+}$)?

• A. A is more thermodinamically stable than B
• B. A shows optical isomerism
• C. A and B both are diamagnetic
• D. A is outer orbital complex while B is inner orbital complex

Answer 1

The correct option is D A is outer orbital complex while B is inner orbital complex

(1) Due to chelate effect, A is more thermodynamically stable.
(2) Cis isomer of $\left[Co\right(en{)}_{2}C{l}_2{]}^{+}$ shows optical isomerism.
(3) A and B are diamagnetic.
(4) A and B both are inner orbital complex.