Q. 15

(i) Predict

Answer :

(i)


[MnBr4]2- is a geometrically tetrahedral coordination compound where , Mn has a +2 state ( 4 Br exerts -4 charge and the charge of whole complex is -2 hence charge of Mn =4 – 2 = +2 )


Atomic no. Of Mn is 25 hence, Mn(II) has 23 electrons hence it has 5 valence shell electrons , 3d5 valence configuration.


Hence the number of unpaired electrons in Mn(II) is 5.


(ii)


The structures of geometrical isomers(cis and trans) of the given coordination complex [Co(NH3)4Cl2]+ which has a square planar structure is -



(iii)


The formula for Amminebromidochloridonitrito-N-platinate(II) is


[PtClBr(NO2)NH3]-


The oxidation state of Platinum is II.


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