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Chemistry Vocab 2

TermDefinition
Excited State A state in which an atom has more energy than it does at its ground state.
Ground State The lowest state of a quantized system.
Ionization Energy The energy required to remove an electron from an atom or ion.
Electronegativity The ability of an atom in a chemical compound to attract electrons.
Electromagnetic Spectrum All of the frequencies or wavelengths of electromagnetic radiation.
Avogadro's Number 6.02 x 10^23 the number of atoms or molecules in 1 mole.
Electron Affinity The energy change when an electron is acquired by a neutral atom.
Mole The SI base unit to measure the amount of the substance.
Photon A unit or quantum of light; particle of electromagnetic radiation.
Orbital A region in an atom where there is a high probaility of finding electrons.
Electron Configuration The arrangement of electrons in an atom.
Pauli Exclusion principle The principle that states that two particles of a certain class cannot be in exactly the same energy state.
Hund's Rule Singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin; the number of unpaired electrons is the maximum possible and these unpaired electrons bonds between atoms.
Created by: Ahayes12
 

 



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