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18 terms

modern chemistry chap 5

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actinide
14 elements with atomic numbers from 90 to 103
lanthanide
the 14 element with atomic numbers from 58 to 71
periodic law
physical and chemical properties of the elements are periodic functions of their atomic numbers
alkali metals
group 1 elements
alkaline-earth metals
group 2 elements
halogens
group 17 of the periodic table
main-group/representative elements
the p-block elements together with the s-block elements.
atomic radii
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
the 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
electrons available to be lost, gained, or shared in the formation of chemical compounds
electronegativity
the measure of the ability of an atom in a chemical compound to attract electrons
periodic table
an arrangement of the elements in order of their atomic numbers so that elements with smiliar properties fall in the same column, or group.
transistion elements
d block elements with typical metal properties