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According to werner primary valency of  central atom in  CrH2O6Cl3 Complex is 

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By Expert Faculty of Sri Chaitanya
a
5
b
3
c
6
d
4

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detailed solution

Correct option is C

CrH2O6Cl3 For this,x+6(0)+3(-1)=0; X=+3 , primary valency satisfied by negative ligands/ species  i.e Cl- , so primary valency = 3


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According to werner primary valency of  central atom in  Pt(en)H2OCl3Cl Complex is 

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