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...
Mass & Charge Distribution The mass of an atom is concentrated in the nucleus, because the nucleus contains the heaviest subatomic particles (the neutrons and protons) The mass of the electron ...
Titrations Volumetric analysis is a process that uses the volume and concentration of one chemical reactant (a standard solution) to determine the concentration of another unknown solution The tech...
