In the manufacture of ions a gas `(A)` is formed in the zone of combustion of the blast furnace The gad `(A)` formed in the zone of combustion of the blast furnace. The gas `(A)` reacted with coke in the zone of fusion to from another gas `(B).X` moles of `(B)` reacts with iron at `200^(@)C` and `100` atm pressure to form a compounds `(C)`
The d orbital (s) involved in the formation of the complex `(C)` will be
(a) `d_(z)2`
(d) ``d_(xy)` and `d_(x)2-y2`
(c) ``d_(x)2-y2` and `d_(z)2`
(d) `d_(x)2-_(y)2` .