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List of valency |
| Answer» Hydrogen 1Helium 0Lithiyum 1Beriliyum 2Boron 3Carbon 4Nitrogen 3Oxygen 2Florine 1Neon 0Sodium 1Magnesium 2Alluminium 3Sulphur 4Phosphorus 3Silicon 2Chlorine 1Argon 0 Potassium 1Calcium 2 | |