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Formula Sheet

Chemical Bonding — Formula Sheet

NIOS · Class 10 · Science & Tech

9 formulas from Chemical Bonding (NIOS Class 10 Science & Tech) on one page, grouped by topic. Part of the NIOS Class 10 Science & Tech syllabus.

42 questions37 flashcards9 formulas & key relations5 concepts

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A step-by-step diagram illustrating the formation of an ionic bond between a sodium atom and a chlorine atom, showing the transfer of an electron from Na to Cl to form Na+ and Cl- ions, and their subs
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9 Entries · 2 Sections

Formulas and Key Relations

Ionic bonding

Formation of NaCl: 2Na(s) + Cl2(g) → 2NaCl(s)

Na+(g) + Cl-(g) → Na+Cl- or NaCl(s)

Mg → Mg2+ + 2e-

2Cl(g) + 2e- → 2Cl-(g)

Net energy difference for NaCl formation = 496 - 349 = 147 kJ/mol

Covalent bonding

H· + ·H → H:H → H2

:Cl· + ·Cl: → :Cl:Cl: (Cl-Cl)

O=O

:N≡N:

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Frequently Asked Questions

What are the important topics in Chemical Bonding for NIOS Class 10 Science & Tech?
Key topics in Chemical Bonding include Why atoms combine, Ionic bonding and ionic compounds, Properties of ionic compounds, Covalent bonding and covalent compounds. Study these first, then practise questions on each for the NIOS Class 10 board exam.
How many formulas are in Chemical Bonding?
This sheet lists 9 formulas from Chemical Bonding, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Chemical Bonding for the NIOS Class 10 board exam?
Learn the core ideas first, then work through the 42 practice questions on Chemical Bonding. 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 NIOS Class 10 Science & Tech Formula Sheet

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