CBSE 2023 · Region 4 · Set 3 · Q19 · 2 marks
Write IUPAC names of the following :(a)$\displaystyle \left[\mathrm{Co}(\mathrm{en})_{2}\left(\mathrm{H}_{2} \mathrm{O}\right)(\mathrm{CN})\right]^{2+}$(b)$\displaystyle \left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{2}$
Write IUPAC names of the following :
(a)
$\displaystyle \left[\mathrm{Co}(\mathrm{en})_{2}\left(\mathrm{H}_{2} \mathrm{O}\right)(\mathrm{CN})\right]^{2+}$
(b)
$\displaystyle \left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{2}$
Marking-scheme solution
(a) aquacyanidobis(ethane-$\displaystyle 1,2$-diamine)cobalt(III) ion
(b) hexaamminenickel(II) chloride
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CBSE Class 12 Chemistry past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.