Valency Kaise Nikale? 🔥 | Unlock First 20 Elements Trick

Valency Kaise Nikale? 🔥 | Unlock First 20 Elements Trick

Watch Modern Periodic table trick for 118 elements: click on below link :
[ https://youtu.be/1Nwj0qngWhg?si=31wjrBt_BcHkygDP]

In this 11-minute Chemistry video, Gaurav Arora Sir (13 Years Teaching Experience) explains how to find valency of the first 20 elements using the easiest shortcut tricks for beginners. This video clears all confusion related to metals, non-metals, metalloids, electron donation, electron acceptance, positive and negative valency signs, and outermost shell concepts.

Time Stamps:
00:00 - Intro
00:21 - intro to first 20 elements
02:31 - How to find valency ( rules )
09:46 - Basic rules discussed
10:55 - outro

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🔥 Rule 1 – Electron Donation / Acceptance Rule
An element either: • Donates electrons
• Accepts electrons
• Or shares electrons
This decides the valency of the element.

🔥 Rule 2 – 1-2-3 Electron Donation Rule
If the outermost shell has: • 1 electron → donate 1
• 2 electrons → donate 2
• 3 electrons → donate 3
Examples: • Hydrogen → 1 electron → Valency = +1
• Sodium (2-8-1) → donate 1 electron → Valency = +1
• Magnesium (2-8-2) → donate 2 electrons → Valency = +2

🔥 Rule 3 – 5-6-7 Electron Acceptance Rule
If the outermost shell has: • 5 electrons → accept 3
• 6 electrons → accept 2
• 7 electrons → accept 1
Examples: • Oxygen (2-6) → accepts 2 electrons → Valency = –2
• Nitrogen (2-5) → accepts 3 electrons → Valency = –3
• Chlorine (2-8-7) → accepts 1 electron → Valency = –1

🔥 Carbon & Silicon Special Rule
Carbon and Silicon generally: • Do not donate electrons
• Do not accept electrons
• They mainly share electrons (Covalent Bonding)

This video is very useful for: Class 9, 10, 11, 12, NEET, JEE, SSC, Defence, Banking & Government Exam Students.

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Видео Valency Kaise Nikale? 🔥 | Unlock First 20 Elements Trick канала Sir Gaurav Arora