Copper is a chemical element with the symbol Cu (from Latin: cuprum) and atomic number 29. It is a soft, malleable, and ductile metal that has been used for thousands of years in various applications. Copper has excellent thermal and electrical conductivity, making it an essential component in many electrical and electronic devices.
2n3440 pinout The 2N3440 are silicon epitaxial planar NPN transistors in jedec TO-39 metal case designed for use in consumer and industrialline-operated applications. These devices are particularly suited as drivers in high-voltage low current inverters, switching andseries regulators.
Radioactivity (from Latin: radio – “emit” and activus – “active”) is the property of certain elements and isotopes that have unstable atomic nuclei and can emit excess energy in the form of particles or electromagnetic radiation.
Isotope – is a variety of an atom of a chemical element that differs from other isotopes of the same element in the number of neutrons in the nucleus. In other words, all atoms of one element have the same number of protons in the nucleus (which determines its atomic number) but can have different …
Neutron – is an elementary particle with no electric charge that is part of the atomic nucleus. History of Neutron Discovery The discovery of the neutron was a significant event in the history of science. Before that time, two main particles of the atom were known: electrons, which have a negative charge and move around …
Proton – is an elementary particle that constitutes the nucleus of an atom along with neutrons. It has a positive electric charge and is symbolized by the letter “p.”
Electron (Greek Ηλεκτρόνιο) is an elementary particle carrying a negative electric charge. It is one of the fundamental constituents of atoms, alongside protons and neutrons.
The atom is the basic unit of matter, consisting of a nucleus of protons and neutrons, surrounded by electrons that orbit the nucleus in shells or energy levels.
Phenol (C6H5OH) is a hydroxyl aromatic compound that has colorless or pale pink crystals with a pleasant odor. It is one of the most important organic compounds with a wide range of applications in industry and medicine. It is used in the production of polymers, pharmaceuticals, disinfectants, and other chemical substances. In this article, we …
ЗмістAtomValence of MercuryPhysical PropertiesChemical PropertiesIsotopesUses of HgHealth Effects of HgPreventing Hg Exposure Mercury is a chemical element with the symbol Hg and atomic number 80. It is a silver-white metal, liquid at room temperature, and has high density. Hg is a highly toxic substance that can cause serious health problems if ingested or inhaled. In …