CBSE Class 12 Chemistry D And F Block Elements Worksheet Set C

CBSE Class 12 Chemistry Worksheet - d and f block. 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. For the complex [NiCL4]2- , write (i) the IUPAC name.

(ii) thehybridization type. (iii) the shape of the complex. (3)

2. What is meant by crystal field splitting energy? On the basis of crystal field theory, write the electronic configurationof d4 in terms of t2g and eg in an octahedral field

when Δ0≥P (ii) Δo≤P (3)

3. Give reason for the following:

(i) Mn3+ is a good oxidising agent.

(ii) E0M2+/M values are not regular for first row transition metals (3d series)

(iii) Although “F” is more electronegative than “O” the highest Mn fluoride is MnF4, whereas the higest oxide is Mn2O7. (3)

4. Complete the following equations: (2)

(a) 2CrO42- + 2H+

(b) KMnO4Δ

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