Physics · PYQ NEET UG 2019(1)
हिन्दी\( \alpha \)-particle consists of:
Correct answer · Option 3
2 protons and 2 neutrons only
Explanation
An \( \alpha \)-particle is a doubly ionized helium nucleus (\( _2^4\text{He}^{2+} \)), which consists of 2 protons and 2 neutrons.