Valency 1-2-3-4 badhti hai, phir 3-2-1-0 ghatti hai
Valency of Elements
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Yaad Karne ki List
- Group 1 (H, Na, K) — valency 1
- Group 2 (Mg, Ca) — valency 2
- Group 13 (Al) — valency 3
- Group 14 (C, Si) — valency 4
- Group 15 (N, P) — valency 3
- Group 16 (O, S) — valency 2
- Group 17 (F, Cl) — valency 1
- Group 18 (He, Ne) — valency 0
Mnemonic Tricks
Kaise Map Hota Hai
| Cue | Maps To |
|---|---|
| Group 1 | Valency 1 |
| Group 2 | Valency 2 |
| Group 13 | Valency 3 |
| Group 14 | Valency 4 |
| Group 15 | Valency 3 |
| Group 16 | Valency 2 |
| Group 17 | Valency 1 |
| Group 18 | Valency 0 |
Kyun Yaad Rehta Hai
Main groups mein valency 1-2-3-4 tak badhti hai (carbon group tak), phir 3-2-1-0 ghatti hai. Ise mountain ki tarah yaad rakho: 4 tak upar, phir 0 tak neeche.
Aksar Poochhe Jaane Wale Sawaal
Valency kya hai?
Valency kisi element ki combining capacity hai — compound banane ke liye atom jitne electrons lose, gain ya share karta hai. H ki valency 1 aur O ki 2 hai, isliye water H2O hai.
Periodic table se valency nikalne ki easy trick kya hai?
Main-group elements ke liye: group 1,2,13,14 ki valency 1,2,3,4; group 15,16,17 ki 3,2,1 (yaani 8 minus last digit); group 18 ki 0.
Ferrous aur Ferric mein kya difference hai?
Dono iron hain. Ferrous iron ki valency 2 (Fe2+) aur Ferric ki 3 (Fe3+) hai. '-ous' hamesha lower aur '-ic' higher valency dikhata hai.