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p-block Elements and their Compounds - I — Formula Sheet

Telangana Open School (TOSS) · Class 12 · Chemistry

12 formulas from p-block Elements and their Compounds - I (Telangana Open School (TOSS) Class 12 Chemistry) on one page, grouped by topic.

55 questions30 flashcards12 formulas & key relations5 concepts

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12 Entries · 7 Sections

Formulas and Key Relations

Boron and Its Compounds

H3BO3

Na2B4O7·10H2O

Aluminium and Alums

Al2Cl6

KAl(SO4)2·12H2O

Carbon and Silicon

sp³ hybridization

sp² hybridization

Nitrogen and Phosphorus Compounds

NH3

HNO3

Boron and Its Compounds

Boric acid (H₃BO₃) is prepared by reacting borax with sulfuric acid: Na₂B₄O₇ + H₂SO₄ + 5H₂O → Na₂SO₄ + 4H₃BO₃

Boric acid is a weak Lewis acid, not a protonic acid. It accepts OH⁻ from water: B(OH)₃ + 2H₂O ⇌ [B(OH)₄]⁻ + H₃O⁺

Nitrogen Compounds and Fertilizers

Ammonia is prepared by Haber's process

N₂ + 3H₂ ⇌ 2NH₃ (Fe catalyst, 750K, 200 atm)

Boric acid is a weak Lewis acid

B(OH)₃ + H₂O → [B(OH)₄]⁻ + H₃O⁺

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Frequently Asked Questions

What are the important topics in p-block Elements and their Compounds - I for Telangana Open School (TOSS) Class 12 Chemistry?
Key topics in p-block Elements and their Compounds - I include Boron and Its Compounds, Aluminium and Double Salts, Carbon and Silicon Compounds, Nitrogen Compounds and Fertilizers. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How many formulas are in p-block Elements and their Compounds - I?
This sheet lists 12 formulas from p-block Elements and their Compounds - I, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise p-block Elements and their Compounds - I for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 55 practice questions on p-block Elements and their Compounds - I. 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.

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

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