CBSE Class 12-science Answered

Entire syllabus is important in electrochemistry, p block, d block and f block elements. Please go through the NCERT questions, live test series, model tests, and chapter tests to make the concepts more understandable.

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However you can prepare the following questions..

The important topics/sections/questions from d and f-block elements are:

• Why is Ce (IV) good analytical reagent?
• General trends in the properties of transition and inner transition elements.

• Ionisation energies and ionisation enthalpies.
• Standard electrode potential (E^o) and Chemical reactivity of both d and f block elements
• Complex formation
• Alloy formation
• Salts containing oxoanions of transition metals.

• Why is the absorption bands narrow in f elements?
• What happens at the third ionization enthalpy of f block elements?
• List the irregularities in the actinide series compared to the lanthanide?
• Compare the different characteristic of lanthanides and actinides?
• Actinide contraction is greater from element to element than lanthanide contraction. Why?
• List some practical applications of f block elements?
• The chemistry of the actinide elements is not as smooth as that of the lanthanides. Justify?
• Oxidation states of lanthanoids and actinoids