Physics · Modern Physics
एक α-कण में होते हैं:
- 1केवल 2 प्रोटॉन और 2 न्यूट्रॉन✓
- 22 इलेक्ट्रॉन, 2 प्रोटॉन और 2 न्यूट्रॉन
- 3केवल 2 इलेक्ट्रॉन और 4 प्रोटॉन
- 4केवल 2 प्रोटॉन
सही उत्तर देखें
केवल 2 प्रोटॉन और 2 न्यूट्रॉन
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