The alpha particle carries two positive charges. Its mass is very nearly equal to that of:
✓ Correct answer: b) an atom of helium
ExplanationAn alpha particle consists of two protons and two neutrons, which is exactly the nucleus of a helium atom (He2+).The mass of an alpha particle is very close to the mass of a helium atom as the mass of electrons is insignificant in comparison with protons and neutrons.11.2 Inorganic Chemistry 314
Practice more Science PYQs
Attempt a free 10-question quiz or browse the full Science & Technology previous-year-question bank with instant answers and explanations.
🔬 Science PYQs →