Question

A free neutron decays into ______.

विकल्प

• A proton, a positron and a antineutrino

• A proton, an electron, and an antineutrino

• A proton, a positron and a neutrino

• A proton, an electron and a neutrino

Answer 1

A free neutron decays into a proton, an electron, and an antineutrino.

Explanation:

Free neutrons are unstable. A free neutron (n⁰) decays into a proton (p⁺), an electron (e⁻), and an electron antineutrino `(barnu_"e")`. This phenomenon is called beta decay.