Explain the atomic structure
Of what?
Without further elaboration, it is difficult to know what you are seeking. I searched Google under the key words "atomic structure" to get these possible sources:
http://www.chemistry24.com/college_chemistry/atomic-structure-and-electron-configuration.html
http://web.jjay.cuny.edu/~acarpi/NSC/3-atoms.htm
http://www.chem4kids.com/files/atom_structure.html
http://www.shodor.org/unchem/basic/atom/index.html
http://www.terrific-scientific.co.uk/Pages/AtomicStructure/atomic_structure1.htm
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
I hope thjis helps. If not, repost your question in more specific terms. Thanks for asking.
The atomic structure refers to the organization and arrangement of particles within an atom. Atoms are the basic building blocks of matter and consist of three main subatomic particles: protons, neutrons, and electrons.
Protons are positively charged particles found in the nucleus, or the central part, of an atom. Each proton has a relative mass of 1 atomic mass unit (amu) and a positive charge of +1.
Neutrons are neutral particles, meaning they have no charge. Like protons, neutrons are located in the nucleus of an atom. They also have a mass of approximately 1 amu.
Electrons are negatively charged particles that orbit around the nucleus of an atom in specific energy levels or shells. Electrons have much smaller mass compared to protons and neutrons, about 1/1836th of their mass. The charge of an electron is -1.
The number of protons in an atom determines its identity and is referred to as the atomic number. For example, an atom with 6 protons is a carbon atom, while an atom with 26 protons is an iron atom. The sum of protons and neutrons is called the mass number or atomic mass.
The electrons are arranged in various energy levels or shells around the nucleus. The innermost shell can hold up to 2 electrons, while the second and third shells can hold up to 8 electrons each. The outermost shell, also known as the valence shell, determines the chemical properties of an atom.
Understanding the atomic structure allows us to predict various atomic properties, such as reactivity, chemical bonding, and even the behavior of materials. Scientists have studied and continue to explore the atomic structure using experimental and theoretical methods, including X-ray crystallography, spectroscopy, and quantum mechanics.