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Find the number of complexes which follo...

Find the number of complexes which follow sidgwick rule of EAN
`[Fe(CO)_(5)]," "[Mn(CO)_(5)]," "[NiCl_(4)]^(2-)`,
`[Pt(NH_(3))_(4)Cl_(2)]^(2+)," "[HgI_(4)]^(2-)," "H[AuCl_(4)]`
Atomic number : Fe = 26, Mn = 25, Ni = 28, Pt = 78, Hg = 80, Au = 79

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The correct Answer is:
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`Fe(CO)_(5),[Pt(NH_(3))_(4)Cl_(2)]^(2+),[HgI_(4)]^(2-)`
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Find the number of complexes following sidgwick EAN rule : [Ag(CN)_(2)^(-)," "[HgI_(4)]^(2-), [Ti(CO)_(6)]^(2-)," "[Ti(sigma-C_(5)H_(5))_(2)(pi-C_(5)H_(5))_(2)]^(@), [Fe(CN)_(6)NO]^(2-)

Name of following coordinatin entities and describe their structures : (i) [Fe(CN)_(6)]^(4-) (ii) [Cr(NH_(3))_(4)Cl_(2)]^(+) (iii) [Ni(CN)_(4)]^(2-) [Atomic number Fe = 26 , Cr = 24 , Ni = 28]

The complexes [Pt(NH_(3))_(4)][PtCl_(6)] and [Pt(NH_(3))_(4)Cl_(2)][PtCl_(4)] are :

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