Question

Has the same mass and charge as an electron :

• A. Alpha particle
• B. Beta particle
• C. Neutron
• D. Gamma ray
• E. Positron

Answer 1

The correct option is B Beta particle

Beta particles have same mass and charge as an electron have.
A beta particle, sometimes called beta ray, $\left(\beta \right)$, is a high-energy, high-speed electron or positron emitted in the radioactive decay of an atomic nucleus, such as a potassium-40 nucleus, in the process of beta decay. Two forms of beta decay, $\left({\beta }^{-}\right)$ and $\left({\beta }^{+}\right)$, respectively produce electrons and positrons.