d-block and f-block Elements — Important Questions
Telangana Open School (TOSS) · Class 12 · Chemistry
50 important questions from d-block and f-block Elements for Telangana Open School (TOSS) Class 12 Chemistry, with answers.
Interactive on Super Tutor
Studying d-block and f-block Elements? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for important questions and more.
Free trial, no card needed.
Important Questions from d-block and f-block Elements
Which of the following is a characteristic property of transition elements?
Show answer
They exhibit variable oxidation states
Variable oxidation states are a characteristic property of transition elements due to the similar energies of (n-1)d and ns orbitals, allowing both to participate in bonding.
What is the most common oxidation state of 3d elements after scandium?
Show answer
+2
After scandium, the most common oxidation state of 3d elements is +2, which arises from the loss of two 4s electrons.
Which of the following ions is diamagnetic?
Show answer
Sc³⁺
Sc³⁺ has the electronic configuration 3d⁰, meaning it has no unpaired electrons and is therefore diamagnetic.
What is the color of aqueous Cu²⁺ ions?
Show answer
Blue
Aqueous Cu²⁺ ions are blue in color due to d-d transitions in the partially filled d-orbitals.
+46 more questions on d-block and f-block Elements (Telangana Open School (TOSS) Class 12 Chemistry)
Practise AllFrequently Asked Questions
What are the important topics in d-block and f-block Elements for Telangana Open School (TOSS) Class 12 Chemistry?
How many important questions are there in d-block and f-block Elements?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for d-block and f-block Elements
Practice Quiz
Test yourself with a quick quiz
Revision Notes
Key points for last-minute revision
Formula Sheet
The chapter's formulas in one place
Chapter Summary
Understand the chapter at a glance
Concept Maps
See how topics connect
Study Plan
Step-by-step plan for this chapter
Flashcards
Quick-fire cards for active recall
Syllabus
What topics to cover
For serious students
Get the full d-block and f-block Elements chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for Telangana Open School (TOSS) Class 12 Chemistry. Free to start, no card needed.