3/20/2024 0 Comments Bohr atom model![]() ![]() 1 El model de Bohr considera que làtom està format per un nucli atòmic molt petit que conté tota la càrrega positiva i gairebé tota la massa de làtom. This explains why you see specific lines of light when looking at an atomic spectrum-each line of light matches a specific "step down" that an electron can take in that atom. El model atòmic de Bohr és una teoria sobre la constitució dels àtoms, cal citació proposada pel físic danès Niels Bohr lany 1913. The energy emitted by electrons dropping back to lower energy levels will always be precise amounts of energy, because the differences in energy levels are precise. (b) The energy of the orbit becomes increasingly less negative with increasing n. Ketika elektron meloncat dari satu orbit ke orbit lainnya selalu disertai dengan pemancaran atau penyerapan sejumlah energi elektromagnetik hf. 2 The Bohr Model of the Hydrogen Atom (a) The distance of the orbit from the nucleus increases with increasing n. Model Bohr dari atom hidrogen menggambarkan elektron-elektron bermuatan negatif mengorbit pada kulit atom dalam lintasan tertentu mengelilingi inti atom yang bermuatan positif. The electrons then give off the energy in the form of a piece of light-called a photon-that they had absorbed, to fall back to a lower energy level. In this state the radius of the orbit is also infinite. If the electrons are given energy (through heat, electricity, light, etc.) the electrons in an atom could absorb energy by jumping to a higher energy level, or excited state. The electrons typically have the lowest energy possible, called the ground state. In the year 1913, Niels Bohr proposed an atomic structure model, describing an atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the positively charged nucleus like planets around the sun in our solar system, with attraction provided by. He suggested that an atomic spectrum is made by the electrons in an atom moving energy levels. 1 I denne model er atomet arrangeret som en atomkerne med en positiv ladning, omkredset af negative elektroner, på stort set samme måde som solsystemet, men med elektrostatiske tiltrækningskræfter i stedet for massetiltrækning. Bohrs model suggests that the atomic spectra of atoms is produced by electrons gaining energy from some source, jumping up to a higher energy level, then immediately dropping back to a lower energy level and emitting the energy difference between the two energy levels. The evidence used to support Bohr's model came from the atomic spectra. Bohrs atommodel fra 1913 blev formuleret af den danske fysiker Niels Bohr. The Bohr model shows the atom as a small, positively charged nucleus surrounded by orbiting electrons. Bohr’s model required only one assumption: The electron moves around the nucleus in circular orbits that can have only certain allowed radii. Bohrs greatest contribution to modern physics was the atomic model. ![]() \): In Bohr's Model of the atom, electrons absorb energy to move to a higher level and release energy to move to lower levels. In 1913, a Danish physicist, Niels Bohr (18851962 Nobel Prize in Physics, 1922), proposed a theoretical model for the hydrogen atom that explained its emission spectrum.
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