Question

Which of the following names is impossible?
 A.Potassium tetrafluoridooxidochromate(VI)
 B.Barium tetrafluoridobromate (III)
 C.Dichlorobis (urea) copper (II)
 D.All are impossible

Answer 1

Hint: We have to know that, in inorganic science, coordination compound is any of the evaluations of substances that are made out of synthetic constructions in which a focal metal particle is encircled by non-metal iotas or gatherings of molecules called ligands.

Complete answer:
Rules for naming coordination compounds has to be given below,
In naming the whole unpredictable, the name of the cation is given first and the anion second, regardless of whether the cation or the anion is the intricate species.
In the unpredictable particle, the name of the ligand or ligands goes before that of the focal metal molecule.
Ligand names for the most part end with 'o' if the ligand is negative and unmodified if the ligand is nonpartisan.
A Greek prefix (mono, di, tri, tetra) shows the quantity of every ligand. On the off chance that the name of the actual ligand contains the terms mono, di, and tri.
A Roman numeral or a zero in brackets is utilized to show the oxidation number of the focal metal molecule.
In the event that the perplexing particle is negative, the name of the metal finishes in 'ate'.
In the event that more than one ligand is available in the species, the ligands are named in sequential request paying little heed to the quantity of each.
Potassium tetrafluoride oxide chromate(VI) does not obey the above rules. So that is impossible.
Remaining compounds obey the above rules, So that remaining options are incorrect.

Therefore, option (A) is correct.

Note:
We have to know that coordination compounds for the most part show an assortment of unmistakable physical and synthetic properties, like tone, attractive vulnerability, solvency and instability, a capacity to go through oxidation-decrease responses, and reactant action.