MCQ
Total number of isomers possible for the complex $[Co(en)_2Cl_2]$ is
- A$2$
- ✓$3$
- C$4$
- D$5$
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$X_2 + Y_2 \rightarrow 2XY,$ is given below :
$(i)\,\, X_2 \rightarrow X + X\, (fast)$
$(ii)\,\,X + Y_2 \rightleftharpoons XY + Y\, (slow)$
$(iii)\,\,X + Y \rightarrow XY\, (fast)$
The overall order of the reaction will be