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Chem Vocab #2

TermDefinition
Avogadro's Number 6.02x10(23) - the number of atoms or molecules in 1 mol.
Electron Affinity The energy needed to remove an electron from a negative ion to form a neutral atom or molecule.
Electron Configuration The arrangement of electrons in an atom.
Electromagnetic Spectrum All of the frequencies or wavelengths of electromagnetic radiation.
Electro-negativity A measure of the ability of an atom in a chemical compound to attract electrons.
Excited State A state in which an atom has more energy than it does at its ground state. (Absorbs energy)
Ground state A state in which an atom has less energy than it does at its excited state. (releases energy)
Hund's Rule The rule that states that for an atom of ground state, the number of unpaired electrons is the maximum possible and these unpaired electrons have the same spin.
Orbital A region in the atom where there is a high probability of finding electrons.
Ionization Energy The energy required to remove an electron from an ion or atom.
Created by: cameronwest