![]() ![]() However, his model worked well as an explanation for the emissions of the hydrogen atom, but was seriously limited when applied to other atoms. Moving up the ladder increases your potential energy, while moving down the ladder decreases your energy.īohr's work had a strong influence on our modern understanding of the inner workings of the atom. As you move up or down a ladder, you can only occupy specific rungs and cannot be in the spaces in between rungs. An everyday analogy to the Bohr model is the rungs of a ladder. Like carbon or oxygen, Heavier atoms have more protons in the nucleus and more electrons to cancel the. Subsequently, Bohr extended the model of hydrogen to give an approximate model for heavier atoms. What is Bohr’s Model of an Atom According to the Bohr Atomic model, a small positively charged nucleus is surrounded by revolving negatively charged electrons in fixed orbits. The electron is not allowed to occupy any of the spaces in between the orbits. Although Bohr’s atomic model is designed specifically to explain the hydrogen atom, his theories generally apply to the structure of all atoms. The orbits that are further from the nucleus are all of successively greater energy. The ground state of the hydrogen atom, where its energy is lowest, is when the electron is in the orbit that is closest to the nucleus. When the electron is in one of these orbits, its energy is fixed. It accounts for a wide range of physical phenomena, including the existence of discrete packets of energy and matter, the uncertainty principle, and the exclusion principle.Īccording to the Bohr model, often referred to as a planetary model, the electrons encircle the nucleus of the atom in specific allowable paths called orbits. This is a theory based on the principle that matter and energy have the properties of both particles and waves. This was the basis for what later became known as quantum theory. While the model had its limitations, it paved the way for further. It successfully explained the emission spectra of hydrogen and hydrogen-like atoms and introduced the concept of quantized energy levels. When the energy is removed, the electrons return back to their ground state, emitting a corresponding amount of energy-a quantum of light, or photon. Bohr’s atomic model made significant contributions to our understanding of atomic structure and the behavior of electrons within atoms. (Credit: Zachary Wilson Source: CK-12 Foundation License: CC BY-NC 3.0(opens in new window))īohr explained that electrons can be moved into different orbits with the addition of energy. It came into existence with the modification of Rutherford’s model of an atom. \): Bohr's atomic model hydrogen emission spectra. The Bohr model of the atom was proposed by Neil Bohr in 1915. An early model of the atom was developed in 1913 by Danish scientist Niels Bohr (18851962). ![]()
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