Chapter 6 Flashcards
metal
generally good conductors of heat and electric current
nonmetal
poor conductors of heat and electric current
alkali metal
elements in Group 1A
alkaline earth metal
elements in Group 2A
halogen
no metals of group 7A
noble gas
elements in group 8A
representative element
elements in groups 1A through 7A, display a wide range of physical and chemical properties
transition metal
group B elements, displayed in main body of a periodic table
inner transition metal
elements that appear below the main body of the periodic table
ion
an atom or group of atoms that has a positive or negative charge
atomic radius
one half of the distance between the nuclei of two atoms of the same element when the atoms are joined
cation
an ion with a positive charge
anion
an ion with a negative charge
ionization energy
energy required to move an electron from an atom
electronegativity
ability of an atom of an element to attract electrons when the atom is in a compound