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Alpha particle is a combination of two protons and two neutrons. These protons and neutrons are bound together closely to each other and make a single particle. This resulting particle is identical to the helium-4 nucleus. The alpha particles are generally produced in the process of alpha decay.

What is alpha particle simple definition?

Alpha particles (a) are composite particles consisting of two protons and two neutrons tightly bound together (Figure 1). They are emitted from the nucleus of some radionuclides during a form of radioactive decay, called alpha-decay.

What are alpha particles Ncert?

Alpha particle : A positively charged particle that consists of two protons and two neutrons bound together. It is emitted by an atomic nucleus undergoing radioactive decay and is identical to the nucleus of a helium atom.

What is alpha particle called?

Alpha particles, also called alpha rays or alpha radiation, consist of two protons and two neutrons bound together into a particle identical to a helium-4 nucleus. They are generally produced in the process of alpha decay, but may also be produced in other ways.

What is an alpha particle Toppr?

An Alpha particle is a positively charged particle. It contains two protons and two neutrons. i.e. the charge on the alpha particle is a two-unit positive charge and mass is four-unit. Hence, it contains the nucleus of the helium atom.

What do you mean by alpha in physics?

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.

What is the meaning of alpha in science?

1 : closest in the structure of an organic molecule to a particular group or atom —symbol α α-substitution. 2 : socially dominant especially in a group of animals an alpha male. 3 : alphabetic.

What are alpha a rays class 9?

Alpha particle is alternatively known as Alpha radiation or Alpha ray. It is a positively charged particle emitted from the decay of various radioactive materials. Alpha particle mass is due to the two protons and two neutrons bonding. Thus, the Alpha ray nucleus is very similar to the Helium-4 nucleus.

What is an alpha particle Brainly?

Answer: An alpha particle is identical to a helium atom that has been stripped of its two electrons; thus, an alpha particle contains two protons and two neutrons. Because an alpha particle has no electrons to balance the positive charge of the two protons, it has a charge of +2 and can be represented as He2+.

What is an alpha particle quizlet?

Alpha Particle. a positively charged particle emitted by certain radioactive nuclei, made up of two protrons and two neutrons; a helium nucleus. Chain Reaction. a series of fussion reactions triggered by neutrons released during the fussin of a nucleus.