the alkali metals
The fourth colom from the left.
one is its the first colom in the Periodic Table:}
Column Names.
The periodic table contain all the chemical elements.
See the link below
table
One, the first shell.
elements
data
Table salt, which is sodium chloride, does not naturally contain fluorine. However, some table salts may be fortified with iodine to prevent iodine deficiency in the diet. Fluorine is not typically added to table salt.
They contain similar properties. For example, in the first colum of the periodic table all contain alkali metals. Alkali metals react with water.
Periodic table contain only chemical elements.