Main-group element Main-group element In chemistry and atomic physics, the main group is the group of elements whose lightest members are represented by helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, and fluorine as arranged in the periodic table of the elements. The main group includes the elements (except hydrogen, which is sometimes not included) in groups 1 and 2 (s-block), and groups 13 to 18 (p-block). The s-block elements are primarily characterised by one main oxidation state, and the p-block elements, when they have multiple oxidation states, often have common oxidation states separated by two units. Main-group elements (with some of the
FEM Element It was originally called Electromagnetic Design System (EMDS). FEM Element FEM Element is a commercial finite element method solver for electromagnetic structures from EEsof. FEM Element can perform electromagnetic simulation of arbitrarily-shaped, passive three-dimensional structures. It is aimed at providing 3D EM simulation to designers working on RF circuits, MMICs, PC boards, modules, and signal integrity applications. It provides a full 3D electromagnetic field solver, a solid modeling GUI, and fully automated meshing and convergence capabilities for modeling arbitrary 3D shapes such as connectors, machined parts, components, bond wires, antennas, and packages. FEM Element is available with integration into Keysight