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प्रश्न
Elements X, Y, and Z have atomic numbers 6, 9 and 12 respectively. Which one forms an anion?
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उत्तर
Y = 9 i.e (2, 7)
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संबंधित प्रश्न
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| Atoms | Atomic number | Electron distribution | |
| 1. | O | 8 | ______ |
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