Period 1 element lithium and fluorine (appearing twice), or left floating above the other elements and not assigned to any group in the periodic table. Helium is almost always placed above neon (which is in the p-block) in the periodic table as a noble gas, although it is occasionally placed above beryllium due to their similar electron configuration. Hydrogen (H) is the chemical element with atomic number 1. At standard temperature and pressure, hydrogen is a colorless, odorless, nonmetallic, tasteless, highly flammable diatomic gas with the molecular formula H. With an atomic mass of 1.00794 amu, hydrogen is the lightest element. Hydrogen is
Data element data representation, a collection of data elements forms a data structure. In practice, data elements (fields, columns, attributes, etc.) are sometimes "over loaded", meaning a given data element will have multiple potential meanings. While a known bad practice, overloading is nevertheless a very real factor or barrier to understanding what a system is doing. Data element In metadata, the term data element is an atomic unit of data that has precise meaning or precise semantics. A data element has: Data elements usage can be discovered by inspection of software applications or application data files through a process of manual or