Molecule Definition A molecule is defined as the fundamental units of chemical compounds formed when two or more atoms chemically bond together. It forms the smallest unit of the substance. The atoms of the molecule can be of the same element like oxygen (O2) and hydrogen (H2) (diatomic molecule), or […]
Daily Archives: June 6, 2024
5 posts
Electron Configuration Definition Electron configuration is the arrangement of negatively charged sub-atomic electron particle in orbital shell and subshell around an atomic nucleus. Electron configuration follows specific rules based on the energy levels and sublevels of electrons. Example: Based on Aufbau Principle electron configuration of Helium and Sodium are: Helium […]
Atomic Number, Mass Number, Isotope, Isobar, Isotone, Atomic Mass Atomic Number (Z) The atomic number of an element is the number of protons in the nucleus of its atoms. It determines the identity of the element and its position in the periodic table. For example: Helium The atomic number of […]
Atom and Atomic Theory An atom is the fundamental unit of matter, consisting three sub-atomic particles proton, neutron and electron. Two of the sub-atomic particle (proton and electron) of the atom is electrically charge and one sub-atomic particle (neutron) has no charge. Atom consist a nucleus made up of two […]
Definition Chemistry is a branch of natural science which deals with the scientific study of the properties, composition, structure and behaviour of matter. Chemistry explains: How the substances interact with each other How substances behave under different conditions The changes they undergo and principles governing these changes Antoine-Laurent Lavoisier (1743–1794) […]