V. The Periodic Law Flashcard

Periodic Law
when elements are arranged in order of increasing atomic number, there is a pattern in their physical and chemical properties.
Periodic Table
an arrangement of the elements in order of their atomic numbers so that the elements with similar properties fall in the same column, or group
Alkali Metals
the elements of group two of the periodic table
Alkaline-Earth Metals
the elements of group two of the periodic table
Transition Elements
d-block elements are metals with typical metallic properties
Halogens
the elements of group 17
Atomic Radius
One half the distance between the nuclei of identical atoms that bonded together
Ion
an atom that has positive or negetive charge
Ionization
process that results in the formation of an atom
Ionization Energy
the energy it takes to remove an electron from an atom
Cation
positive ion
Anion
negetive ion
Valence ELectrons
electrons available to be lost, gained, or shared
Electronegativity
measure of the availability of an atom in a compound to attract electrons from another atom
Triads
groups of three element with similar chemical properties
Atomic Number
number of protons
Periods
horizontal rows of the periodic table
Groups
vertical columns of the periodic table
Electron Affinity
the energy change that occurs when an electron is added

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