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Write IUPAC names of the… (Class 12 Chemistry 2026, Q19a)

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ChemistryCBSE Class 12 · Board exam 2026, set 56/1/1 · 2 marks · Very short answer

CBSE Class 12 Chemistry 2026: question 19(a)

Set in the CBSE Class 12 board exam of 2026, paper 56/1/1, section B, question 19(a), for 2 marks. Try it first; the hints and our step-by-step solution are below.

Q19(a) · 2 marks · Very short answerCoordination Compounds

Write IUPAC names of the following coordination compounds :
(i)
(ii)

Source: official question paper from cbse.gov.in (PDF). See it in the full 2026 board paper, set 56/1/1.

Hints

Open one hint at a time and try again before the next.

Hint 1

Name the cation first, then the anion, and work out the oxidation state of each metal.

Hint 2

In an anionic complex the metal name ends in '-ate', using the Latin name where one exists (argentate, ferrate).

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. (i) The cation is (Ag in the +1 state) and the anion is (Ag in the +1 state; an anionic complex takes the suffix -ate, giving argentate). The name is Diamminesilver(I) dicyanidoargentate(I).

    1 mark

  2. (ii) Three oxalate () ligands give a charge of and the complex ion is , so Fe is . Since the complex is an anion, Fe becomes ferrate. The name is Potassium trioxalatoferrate(III).

    1 mark

Answer: (i) Diamminesilver(I) dicyanidoargentate(I); (ii) Potassium trioxalatoferrate(III)

Where the marks are

  • Correct name for (i) (1 mark)
  • Correct name for (ii) (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Coordination Compounds, one at a time, marked against the answer key and marking points.Back to the full paper2026 board paper, set 56/1/1: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.