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18 Cards in this Set

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  • Back
periodic law
the physical and chemical properties of the element are periodic functions of their atomic numbers
periodic table
an arrangement of the elements in order of their atomic numbers so that elements with similar properties fall in the same column, or group
lanthanides
the 14 elements with atomic numbers from 58 (Cerium, Ce) to 71 (Lutetium, Lu)
actinides
the 14 elements with atomic numbers from 90 (thorium, Th) to 103 (lawrencium, Lr)
alkali metals
the elements of Group 1 of the periodic table (lithium, sodium, potassium, rubidium, cesium, and francium)
alkaline-earth metals
the elements of Group 2 of the periodic table (beryllium, magnesium, calcium, strontium, barium, and radium)
transition elements
the d-block elements are metals with typical metallic properties
main-group elements
the p-block elements together with the s-block elements
halogens
the elements of Group 17 (fluorine, chlorine, bromine, iodine, and astatine)
atomic radius
defined as one-half the distance between the nuclei of identical atoms that are bonded together
ion
an atom or group of bonded atoms that has a positive or negative charge
ionization
any process that results in the formation of an ion
ionization energy, IE
energy required to remove one electron from a neutral atom of an element
electron affinity
the energy change that occurs when an electron is acquired by a neutral atom
cation
a positive ion
anion
a negative ion
valence electrons
the electrons available to be lost, gained, or shared in the formation of chemical compounds
electronegativity
a measure of the ability of an atom in a chemical compound to attract electrons