Set: Chapter 5 The Periodic Law

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All 18 terms

TermDefinition
alkali metalone of the elements of Group 1 of the periodic table (lithium, sodium, potassium, rubidium, cesium, and francium)
actinideany of the elements of the actinide series, which have atomic numbers from 89 (actinium, Ac) through 103 (lawrencium, Lr)
alkaline-earth metalone of the elements of Group 2 of the periodic table (beryllium, magnesium, calcium, strontium, barium, and radium)
anionan negative charged ion
atomic numberthe number of protons in the nucleus of an atom; the atomic number is the same for all atoms of an element
cationan ion that has a positive charge
electron affinitythe energy needed to remove an electron from a negative ion to form a neutral atom or molecule
electronegativitya measure of the ability of an atom in a chemical compound to attract electrons
halogenone of the elements of Group 17 (fluorine, chlorine, bromine, iodine, and astatine); halogens combine with most metals to form salts
ionan atom, radical, or molecule that has gained or lost one or more electrons and has a negative or positive charge
ionizationthe process of adding or removing electrons from an atom or molecule, which gives the atom or molecule a net charge
ionization energythe energy required to remove an electron from an atom or ion (abbreviation, IE)
lanthanidea member of the rare-earth series of elements, whose atomic numbers range from 58 (cerium) to 71 (lutetium)
main-group elementan element in the s-block or p-block of the periodic table
periodic lawthe law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements
periodic tablean arrangement of the elements in order of their atomic numbers such that elements with similar properties fall in the same column, or group
transition elementone of the metals that can use the inner shell before using the outer shell to bon
valence electronan electron that is found in the outermost shell of an atom and that determines the atom's chemical properties
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Set Information

Terms 18
Creator nrowland
Created May 5, 2009
Groups None
Subject Chemistry
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Most Missed Words

  1. lanthanide a member of the rare-earth series of elements, whose atomic numbers range from 58 (cerium) to 71 (lutetium) - 3 misses
  2. electronegativity a measure of the ability of an atom in a chemical compound to attract electrons - 3 misses
  3. electron affinity the energy needed to remove an electron from a negative ion to form a neutral atom or molecule - 2 misses
  4. ionization the process of adding or removing electrons from an atom or molecule, which gives the atom or molecule a net charge - 2 misses
  5. alkaline-earth metal one of the elements of Group 2 of the periodic table (beryllium, magnesium, calcium, strontium, barium, and radium) - 2 misses
  6. transition element one of the metals that can use the inner shell before using the outer shell to bon - 2 misses
  7. valence electron an electron that is found in the outermost shell of an atom and that determines the atom's chemical properties - 1 miss