Atomic & Ionic Radius Atomic radius The?atomic?radius?of an element is a measure of the size of an atom It is the distance between the?nucleus?of an atom and the outermost electron shell It can...
Structure of the Periodic Table The?periodic table?is a list of all known elements arranged in order of?increasing atomic number,?from 1 to 118. In addition to this, the elements are arranged in su...
Electron Configurations: Basics The?electron configuration?gives information about the number of electrons in each?shell, subshell?and?orbital?of an atom The subshells are filled in order of increa...
Electron Orbitals Each shell can be divided further into?subshells,?labelled?s, p, d and f Each subshell can hold a specific number of orbitals: s subshell : 1 orbital p subshell : 3 orbitals label...
Electron Energy Levels Shells The arrangement of electrons in an atom is called the?electronic?configuration Electrons are arranged around the nucleus in?principal energy levels?or?principal quantu...
Emission Spectra Electrons move rapidly around the nucleus in energy shells If their energy is increased, then they can jump to a higher energy level The process is reversible, so electrons can ret...
The Electromagnetic Spectrum The?electromagnetic spectrum?is a range of?frequencies?that covers all electromagnetic radiation and their respective?wavelengths?and?energy It is divided into bands or...
Relative Atomic Mass Calculations Isotopes?are different atoms of the?same?element?that contain the?same number of protons?and electrons but a?different number of neutrons These are atoms of the sa...
Atoms: Key Terms The?atomic number?(or?proton number) is the number of protons in the nucleus of an atom and has the?symbol?Z The atomic number is also equal to the number of electrons that are pre...
