it contains C.H atoms generally. some times it contains s too.
Periods are types of elements.
Metals present in the periodic table are conductors.
Naturally occurring and man made elements
Metals and non-metals.
I can find only two types The Mendeleves Periodic table based on Atomic weight of elements and The Modern Periodic table based on Atomic number of elements.
Elements from the periodic table. There are many different types of metals.
Metals nonmetals and metalliods
"metals"
hydrogen, coal, iodine, oxygen, sodium, and iron
atomic number
A Periodic table The Periodic Table of the Elements.
metallic elements are found in the center of the periodic table, and nonmetallic elements are anywhere but the middle...