SSC MTS EXAM

Detailed explanation-1: -Alpha particles are essentially helium nuclei with two protons and two neutrons bound together. The consequence of their high mass and electrical charge is their inability to penetrate as deep as other particles such as protons and electrons.

Detailed explanation-2: -A helium nucleus has two protons and two neutrons.

Detailed explanation-3: -An alpha particle, structurally equivalent to the nucleus of a helium atom, consists of two protons and two neutrons.

Detailed explanation-4: -alpha particle, positively charged particle, identical to the nucleus of the helium-4 atom, spontaneously emitted by some radioactive substances, consisting of two protons and two neutrons bound together, thus having a mass of four units and a positive charge of two.