Question

What is atomic structure and neutron ?​

Answer 1

Atomic structure

The external human inguisitiveness regarding the composition of matter was somewhat pacified when John Dalton (1808) strated in this atomic theory that all consists of very small matter indivisible and indestructible solid particles called atoms. Somewhat clear picture regarding the composition or the interior of atom began to emerge during the earlier part of the twentieth century. It has now been established that an atom is composed of still smaller particles. The general framework of an atom is a massive positively charged nucleus at the centre, which is surrounded by practically weightless negatively charged electrons. So, an atom is composed of a nucleus and one or more electrons.

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Neutron

Rutherford in 1920 suggested that in an atom there must be present atleast another type of fundamental particle which should be electrically neutral but has unit mass. He also proposed the name neutron for such a particle, although the very existence of such a particle was not supported by experimental evidence. Some twelve years later James Chadwick (1932) discovered a type of massive particle, each of which has a mass almost equal to that of proton but having no charge These particles were then identified and confirmed as neutrons Thus, the neutron is a sub-atomic particle having mass almost equal to that of a proton; but with no charge on it.

Answer 2

Explanation:

Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).