Periodic Table Terms: Chemistry Worksheet 6-2
Period
A horizontal row of elements in the periodic table
Ion
Atom or bonded group of atoms that has a positive or negative charge
Ionization energy
Energy required to remove an electron from a gaseous atom
Alkali Metals
Group 1A elements(except hydrogen)
Alkaline Earth Metals
Group 2A elements
Halogens
Group 7A elements
Noble Gases
Group 8A
Representative elements
Group A elements
Transition Elements
Group B elements
Electronegativity
Indication of an atom's ability to attract electrons in a chemical bond
Octet Rule
Statement that atoms tend to gain, lose or share electrons to acquire a full set of eight valence electrons
Periodic Law
Statement that when the elements are arranged by increasing atomic number, there is a periodic repetition of their chemical and physical properties
Group
a vertical column of elements in the periodic table
