Class 12 Chemistry questions on d- and f-Block

 Class 12 Chemistry questions on d- and f-Block Elements based on Previous Year Questions (PYQs) from CBSE board exams:

Q1.Explain why transition metals and many of their compounds show paramagnetic behaviour. Give one example.

(CBSE 2020)

Q2.Account for the following:

(a) Zn, Cd, and Hg are considered not as transition metals.

(b) Actinoids show a greater range of oxidation states than lanthanoids.

(CBSE 2019)

Q3.Write the electronic configuration of:

(a) Cr³⁺

(b) Cu²⁺

Explain why these ions are stable.

(CBSE 2018)

Q4. (a) Write one difference between the general characteristics of lanthanoids and actinoids.

(b) Why is the +3 oxidation state of actinoids more stable than the +4 oxidation state?

(CBSE 2017)

Q5.Give reasons for the following:

(a) Ce(IV) is a strong oxidizing agent, while Eu(II) is a strong reducing agent.

(b) Transition metals form coloured compounds.

(CBSE 2016)