The Bohr model for potassium contains 5 concentric circles with the element's number of protons and neutrons written in the center. Each circle after that represents an energy level, with dots indicating electrons. There are two electrons in the first energy level, eight electrons in the second and third, and one in the fourth.
Potassium is an alkali metal with the chemical symbol K. It has an atomic number of 19, meaning that it has 19 positively charged protons. It also contains 19 electrons, which have a negative charge, and 20 neutrons, which do not hold a charge. Its atomic mass is 39.0983 atomic mass units, and it has a cubic crystal structure.
The Bohr model of atoms was created by scientist Neils Bohr in 1913. Bohr based his model on the earlier Rutherford model, making improvements and fixing incorrect assumptions. The Bohr model explains how an atom of an element can have stable electrons around its nucleus. Bohr discovered that electrons move in orbits with fixed sizes and energies, and he found that electrons can jump from one orbit to another by absorbing or emitting energy. The Bohr model shows the energy levels of each element and the electrons they contain.Learn More
The Bohr model for nitrogen has a central nucleus with seven neutrons and seven protons, a first energy ring with two electrons and a second energy ring with five electrons. A more detailed version shows two electrons in the s sub-shell of the second energy ring and three electrons in the p sub-shell. The Bohr model is used to demonstrate how the electrons line up around the nucleus of an atom.Full Answer >
The Bohr model of a silicon atom includes notations for 14 protons and 14 neutrons in the nucleus plus designations for three concentric circles for electrons. The inner circle contains two electrons, the middle circles have eight electrons and there are four valence electrons on the outer circle. Electrons appear as small dots on the Bohr model.Full Answer >
The Bohr model of lithium contains a nucleus and two shells, the first with two electrons and the second with one electron. Because of electron affinity, the two electrons in the first shell are relatively close together. The nucleus includes three protons and four neutrons, according to ChemicalElements.comFull Answer >
Niels Bohr investigated the structure of the atom and won the Nobel Prize in Physics in 1922 for discovering the Bohr model. He developed the liquid drop model of the atomic nucleus, proposed the idea of complementarity and identified the U-235 isotope essential for nuclear fission. After fleeing the German invasion of Denmark, he worked on the development of the atomic bomb at Los Alamos in the United States.Full Answer >