CBSE 2026 · Region 5 · Set 1 · Q25 · 3 marks
(a)Write the IUPAC name of the following complex : \[\mathrm{K}_{3}\left[\mathrm{Cr}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right] \](b)Differentiate between homoleptic complex and heterolyptic complex.(c)Which type of isomerism is exhibited by the following complex : \[\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{2} \mathrm{Cl}_{2}\right] \]
(a)
Write the IUPAC name of the following complex : \[\mathrm{K}_{3}\left[\mathrm{Cr}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right] \]
(b)
Differentiate between homoleptic complex and heterolyptic complex.
(c)
Which type of isomerism is exhibited by the following complex : \[\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{2} \mathrm{Cl}_{2}\right] \]
Marking-scheme solution
(a)
Potassium trioxalatochromate (III)
(b)
Complexes in which a metal is bound to only one kind of donor groups are called
homoleptic complexes whereas in heteroleptic complex the metal is bound to more
than one kind of donor groups.
(c)
Geometrical isomerism /cis-trans isomers.
Coordination CompoundsNomenclature of Coordination CompoundsRemembershort_answermedium
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CBSE Class 12 Chemistry past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.