Write the name, the structure and the magnetic behaviour of each one of the following complexes :
(i) `[Pt(NH_(3))_(2)Cl(NO_(2))]`
(ii) `[Co(NH_(3))_(4)Cl_(2)]Cl`
(iii) `Ni(CO)_(4)" "`(Al nos, `Co = 27 , Ni = 28, Pt = 78`)

Explanation

(i) `[Pt(NH_(3))Cl(NO_(2))]`
IUPAC name : Diammine chloride nitrito - N- platinum (ii)
Structure : Square planar `(dsp)^(2)`
Magnetic behaviour : Diamagnetic
(ii) `[Co(NH_(3))_(4)Cl_(2)]Cl` Tetraamine dichlorido cobalt (III) Chloride
Hybriisation : `d^(2) sp^(3)`
Shape : octahedral
Magnetic property : diamagnetic .

(iii) `[Ni(CO_(4))]`
Tetracarbonyl nickel `(O)`
Behaviour : diamagnetic .
Structure = Tetrahedral
The complexes in which formed by hybridisation of one S and three p-orbita to obtain four equivalent orbital oriented tetrahedrally.