IUPAC names n geometry
[CoCl4]2-
[Ni(CN)4]2-
[Cr(H2O)2(C2O4)2]-

↵Hi,

IUPAC names are given below :
  • Tetrachlorocobaltate (II)
  • Tetracyanonikelate.
  • Diaquadioxylatochromate(III)
Kindly refer to the link given below :

https://www.meritnation.com/ask-answer/question/explain-the-geometry-and-hybridisation-of-ni-cn-4-2/chemical-bonding-and-molecular-structure/6846732

Find the geometry of the remaining complexes at your own

Regards

  • 1
Tetrachloro Cobaltate (II)
tetracyano nickelate(II)
Diaqua dioxylato chromate(I)
  • 2
Sorry the last one iss.
Diaqua bisoxylato chromate (III)
  • 2
Oops XD
... Chromate (I)
  • 1
tetrachloridocobaltate(II) ion       geo:tetrahedral
tetracyanidonickelate(II) ion        geo:square planar
​diaquodioxalatochromate(III) ion   geo:octahedral

Thumbs Up please..!
 
  • 2
@ paaru
Explanation for the last one please... I guess it's wrong
  • 1
'oxalate' is a common name , therefore di would do.
We use 'bis' for the IUPAC names to differentiate them
  • 1
And the charge?
  • 1
C2O4 has a charge of -2
therefore the charge on the central metal,
x=-1 + +4=+3
  • 0
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