Physics · Physics
अल्फा (α) कण हैं:
- 1बोरॉन आयन
- 2रेडियोसक्रिय पदार्थों द्वारा उत्सर्जित उच्च ऊर्जा वाली किरणें
- 3तेज गति शील इलेक्ट्रॉन
- 4He++ आयन✓
सही उत्तर देखें
He++ आयन
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