DAYTwo SPECTRoPIIOTOMETRICDETERMINATIONOI MAss PERCENT or nitial and appearance

Question

DAYTwo SPECTRoPIIOTOMETRICDETERMINATIONOI MAss PERCENT or nitial and appearance of Niso. Nution nitial color and appearanee ofINiauNHalJa, solution Color after adding N to NSO solution Color after adding N MCI solution Mass of Niso, elloused, g Molaa mass of Niso. 6ll o g mol oncentration of standard [NilNHal M Approximate of the INKN ion mm Abs the standard Ni(NIIJ.M" olution at Als of the [NiCNIL. ion in the sywanesired solution at the chosen Mass of used, g Concentration of [NicMNI,Mlci, synthesiaed, M (iron calculalion) APPROXIMATE molar mass

Explanation / Answer

1. the coordination number of nickel in the coordination compound [NiCl2(NH3)2] is 4.

2. Hybridization of nickel in [NiCl2(NH3)2] compound is sp3d. The geometry is square planar. The type of hybridization defines the geometry of the resultant molecule. Thus a sp hybridizaton is linear, sp2 is trigonal planar, sp3 is tetrahedral, sp3d is square planar, sp3d2 is octahedral or trigonal bipyramid.

3. [NiCl2(NH3)2] complex is paramagnetic in nature. It has Ni2+ with 4 unpaired electrons.

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