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)` will be
The magnetic moment and effective atomic number of the `C` repectively, are
(a) `4.93` and `36`
(b) `0` and `34`
(c ) ``0` and `36`
(d) None .

Answer

C

Explanation

`Fe(Z =26),3d^(6)4s^(2)`
Since `CO` is a strong ligand so pairing occurs in `Fe(CO)_(5)`
Since `n=0`,compound is diamagnetic
and `mu_(M.M) = 0`
Effective atomic number `=26 +2 xx 5 =36`

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