5. Co-ordination chemistry — Chemistry STD 12 Science — Question

$\mathop {Ca{C_2}}\limits_{\left( A \right)} \xrightarrow{{{H_2}O}}B\xrightarrow[{HgS{O_4}}]{{{H_2}O,{H_2}S{O_4}}}C$

Statement $II :$ The lone pair of electrons on nitrogen in pyridine makes it basic.

Choose the CORRECT answer from the options given below:

$X_2 + Y_2 \rightarrow 2XY,$ 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