Element 4
Beryllium
on the right side of the peridic table
Dmitri Mendeleev
verticle rows are grouped
Assuming you mean in fact the bond of C (Carbon) and H (Hydrogen)... It is merely a bond between the two elements.
There are currently 118 elements on the periodic table.
Gold (Au) is classified as a transition metal.
Atomic Mass
This chemical element is helium.
Metals cover about 2/3rds of the periodic table, and by using the link it will be easy to see where they are.
The Periodic Table consists of 118 elements, number 118 being ununoctium.
he came up with the theory of atomic numbers
A horizontal rows on the peridic table