CBSE Class 12 Chemistry Worksheet - coordination compound. CBSE issues sample papers every year for students for class 12 board exams. Students should solve the CBSE issued sample papers to understand the pattern of the question paper which will come in class 12 board exams this year. The sample papers have been provided with marking scheme. It’s always recommended to practice as many CBSE sample papers as possible before the board examinations. Sample papers should be always practiced in examination condition at home or school and the student should show the answers to teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers.
1. Give IUPAC name of the following co-ordination compounds:
2. How would you account for the following?
(i) Transition metals exhibit variable oxidation states.
(ii) Zr(z=40) and Hf(z=72) have almost identical radii.
(iii) Transition metals and their compounds act as catalyst.
3. Complete the following equations
(i) Cr2O7 + 6Fe2+ + 14 H+ →
(ii) 2CrO42- 2H+ →
(iii) 2MnO4- + 5C2O42- +16 H+ →
4. (a) Which metal in the first transition series exhibits +1 oxidation state frequently and Why?
(b) Which of the following cations are coloured in aqueous solution and why? Sc3+, V3+ , Ti4+ , Mn2+
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