Thank you for reporting, we will resolve it shortly
Q.
Transition elements form binary compounds with halogens. Which of the following elements will form $MF_3$ type compounds?
The d-and f-Block Elements
Solution:
$Cu \rightarrow Cu ^{+}, Cu ^{2+} \rightarrow CuCl , CuF _{2}$
generally transition metals form binary compounds with halogens but $Cr$ form $CrF _{3}$
$\Rightarrow MF _{3}$ type compound