![]() He was the first person to suggest the periodicity in the properties of the elements. Neils Bohr gave the planetary model of an atom. Let’s learn about the arrangement of electrons around the nucleus. The question is, how do electrons revolve? Do they move randomly? Or do they follow a specific route? How are they arranged? The answer to these questions is Electronic Configuration. A more detailed quantum-mechanical model divides the K–Q shells into a set of orbitals, each of which can only be filled by a pair of electrons.īy now, we know that, in an atom, electrons revolve around the nucleus while protons and neutrons are inside the nucleus. According to the older shell atomic model, electrons inhabit several levels ranging from the first shell, K, closest to the nucleus, to the seventh shell, Q, farthest from the nucleus. ![]() (Source: siyavula) What is Electronic Configuration?Įlectronic configuration, also known as electronic structure, is the arrangement of electrons in energy levels surrounding an atomic nucleus. 3rd energy level- M shell/orbit and so on.and the corresponding shells are known as K, L, M, N and so on. The different energy levels are known as 1, 2, 3, 4…. The arrangement depends upon their potential energies in different orbits. Read more about Atomic models and Atomic numbers.Įlectrons are negatively charged subatomic particles arranged like a cloud of negative charges outside the nucleus of an atom. The formula helps in the determination of the arrangement of electrons and is known as “Bohr Bury Schemes.” The distribution of electrons in an atom is called Electronic Configuration. Formula 2n 2 helps in the determination of the maximum number of electrons present in an orbit, here n= orbit number. You can download the Structure of Atom Cheat Sheet by clicking on the download button below ![]() In this topic, we will learn more about the electronic configuration of different elements. These electrons revolve in the orbits around the nucleus from a fixed distance. He proposed that electrons are distributed in circular electronic shells (orbits). He was the person to describe the arrangement of electrons (electronic configuration) in different orbits/shells. “ Bohr atomic model” forms the basis of the electronic structure of an atom. He was the first person to suggest the periodicity in the properties of the elements. Distribution of Electrons in Different Orbits
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