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Chemistry ll

TermDefinition
Mole the quantity of anything that has the same number of particles found in 12.000 grams of carbon-12.
Electron configuration the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals.
Excited state any quantum state of the system that has a higher energy than the ground state
Photon an elementary particle, the quantum of all forms of electromagnetic radiation including light.
Electron affinity the change in energy (in kJ/mole) of a neutral atom (in the gaseous phase) when an electron is added to the atom to form a negative ion. In other words, the neutral atom's likelihood of gaining an electron.
Ionization energy the amount of energy required to remove the most loosely bound electron, the valence electron, of an isolated gaseous atom to form a cation.
Avogadro's number 6.0221409e+23
Pauli exclusion principle two identical fermions cannot occupy the same quantum state simultaneously.
Orbit a mathematical expression, called a wave function, that describes properties characteristic of no more than two electrons in the vicinity of an atomic nucleus or of a system of nuclei as in a molecule.
Electronegativity a measure of the tendency of an atom to attract a bonding pair of electrons.
Electromagnetic spectrum electromagnetic radiation is classified by wavelength into radio wave, microwave, terahertz (or sub-millimeter) radiation, infrared, the visible region that is perceived as light, ultraviolet, X-rays and gamma rays.
Ground state the lowest energy state of an atom or other particle.
Hund's rule every orbital in a sub-shell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.
Created by: jacob.dixon7829