Consider the following two possible geometry of a complex around central metal $\mathrm{M}$ and select correct statement(s) about complex.

The correct statement(s) about the following reaction sequence is/are

Select the correct option (s) for given reaction

The correct order of stability of the following molecules is

Total number of substrate those can give ${\mathrm{SN}}^1$ and ${\mathrm{SN}}^2$ reaction both are :

Consider the following reaction:
If all the products formed in the above reaction (including minor products) are treated with ${\mathrm{Br}}_2/{\mathrm{CCl}}_4$, the number of isomeric products including stereoisomers (if any) produced is