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Q. No.\(\alpha\text{-}\)particle consists of:
| 1. | \(2\) protons only. |
| 2. | \(2\) protons and \(2\) neutrons only. |
| 3. | \(2\) electrons, \(2\) protons, and \(2\) neutrons. |
| 4. | \(2\) electrons and \(4\) protons only. |
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Subtopic: Â Various Atomic Models |
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