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Formula Sheet

d-block and f-block Elements — Formula Sheet

Telangana Open School (TOSS) · Class 12 · Chemistry

3 formulas from d-block and f-block Elements (Telangana Open School (TOSS) Class 12 Chemistry) on one page, grouped by topic. Includes Exceptions.

50 questions35 flashcards3 formulas & key relations5 concepts

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3 Entries · 3 Sections

Formulas and Key Relations

Transition Elements & Electronic Configuration

(n-1)d¹⁻¹⁰ ns¹⁻²

Transition Elements and Electronic Configuration

Exceptions

Cr (Z=24) has configuration [Ar] 3d⁵ 4s¹ (not 3d⁴ 4s²) due to half-filled stability.

Magnetic and Color Properties

Magnetic moment calculated using μ = √[n(n+2)] B.M., where n = number of unpaired electrons.

Full sheet with units and worked examples

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Frequently Asked Questions

What are the important topics in d-block and f-block Elements for Telangana Open School (TOSS) Class 12 Chemistry?
Key topics in d-block and f-block Elements include Transition Elements and Electronic Configuration, Physical and Chemical Properties of Transition Elements, Magnetic and Color Properties, Alloy Formation, Interstitial Compounds, and Catalytic Properties. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How many formulas are in d-block and f-block Elements?
This sheet lists 3 formulas from d-block and f-block Elements, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise d-block and f-block Elements for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 50 practice questions on d-block and f-block Elements. Revise definitions regularly and use flashcards for quick recall before the exam.

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

All Telangana Open School (TOSS) Class 12 Chemistry Formula Sheet

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