Q. The isomer(s) of $[Co(NH_3)_4Cl_2]$ that has/ have a $Cl - Co — Cl$ angle of $90^°$, is/are :
Solution:
$\left[Co\left(NH_{3}\right)_{4} Cl_{2}\right]$ has 2 geometrical isomers
cis isomer has Cl-Co-Cl angle of 90°
