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| कण | इलेक्ट्रॉन | प्रोटॉन | न्यूट्रॉन |
|---|---|---|---|
| $M$ | $2$ | $3$ | $4$ |
| $N$ | $10$ | $9$ | $10$ |
| $O$ | $8$ | $8$ | $8$ |
| $P$ | $8$ | $8$ | $10$ |
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