an element in an "A" group, as a group these elements display a wide range of physical and chemical properties. In their atoms, the s and p sublevels in the highest occupied energy level are partially filled
Electronegativity
the ablity of an atom to attract electrons when the atom is in a compound
Atomis radius
one-half the distance between the nuclei of two atoms of the same element when the atoms are joined
Metals
one of a class of elements that are good conductors of heat and electric current, tend to be ductile, malleable, and shiny
ionization energy
the energy required to remove an electron from an atom in its gaseous state
cation
any atom or group of atoms with a positive charge
noble gases
an element in group 8A, the s and p sublevels of the highest occupied energy level are filled
Akali Metal
any metal in group 1A
nonmetals
an element that tends to be a poor conductor of heatr and electic current; generally have properties opposite of metals
ion
an atom that has a positive or negative charge
transistion metal
highest occupied s sublevel and a nearby d level generally contain electrons