At the end of the article, you will able to describe –What is Atomic Structure, Definition. Let’s start discussing one by one.
What is Atomic Structure?
Atomic structure is consist of several small particles. It can now be evidence at the end that atom consists of two parts:
- Nucleus and
- Extra-nuclear part.
- A nucleus is a central part where all the proton and neutrons are present.
- The negatively charged electrons revolve in a fixed orbit around the nucleus. The path is thus term as extra-nuclear part.
- Scientist now believes that In chemistry, atomic structure protons and neutrons lose their identity. They merge together to form a tiny dense ball-nucleus.
- Protons and neutrons are considered as composite particles by having three quarks each. So, they are not fundamental particles in the true sense.
- The constituents of the nucleus, both proton, and neutron, are often termed as nucleons.
- After the discovery of electron, protons, neutrons, many other important particles were also invented. These are the positron, mesons, antiprotons etc.
- These particles are present within the nucleus.
- The positron or anti-electron has a charge same as an electron and has the same mass as an electron.
- Antiprotons are stable and have a short life period.
- positron: It is the positive counterpart of an electron, discovered by Anderson. On combining with electrons, produce γ-rays.
- Neutrino and antineutrino: This discovery was by scientist Fermi in 1934. Their mass is negligible and has no charge.
- π- mesons and μ- mesons: This discovery was by scientist Yukawa. Their mass is in between that of electron and proton
Atomic Structure Definition
Atomic structure is defined as a structure of atom consist of what. It consists of shells having electrons, protons and neutrons located in the nucleus and other subatomic particles.
Atoms are very small. There size typical around a ten-billionth of a meter. An atom is the smallest part of the matter. An atom participates with its chemical properties.
Except for hydrogen,
All elements made up of atoms are having three subatomic particles electron, proton, and neutrons. However, hydrogen is made up of one electron and one proton. It does not contain any neutron. The atoms of different elements are different in the number of protons, electrons, and neutrons. When these subatomic particles put together they give a structure of an atom.
This is all about the basics of What is Atomic Structure, Definition.