Question: The isomer(s) of $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right]$ that has/have a $\mathrm{Cl}-\mathrm{Co}-\mathrm{Cl}$ angle of $90^{\circ}$, is/are :
meridional and trans
cis and trans
trans only
cis only
Correct Option: , 4
Solution:
