2. The periodic table is a tabular display of the
chemical elements, organized on a basis of their
properties. Elements are presented in increasing
atomic number.
A group is a vertical column in the periodic table.
A period is a horizontal row in the periodic table.
Atomic
number
Element Symbol
Element Name
Atomic mass
Valence is a
measure of the
number of bonds
formed by an
atom.
3.
4. GROUPS
GROUP A:
IA: Alkali metals
IIA: Alkali earth metals
IIIA: Boron group
IVA: Carbon group
VA: Nitrogen group
VIA: Oxygen group
VIIA: Halogens
VIIIA: Noble gases
GROUP B:
Transition metals
Lanthanides + Actinides= Rare earth elements