because they have the same number of valence electrons and hence have similar properties and reactivities.
There are 53 Elements in the Periodic Table.
The elements are listed in ascending order, according to their atomic number. The periodic table is arranged in such a way that elements in the same column tend to have similar properties.
The periodic table.
A group is a column in the periodic table of elements.
all elements are listed in a verticle column but each column indicates a family such as group seven, the halogens, or a group of similar elements such as the oxygen family or nitrogen family.
a family is a column of elements a period is a row of elements
Representative elements
Uranium and arsenic are listed in the periodic table because they are elements.
All the elements listed on periodic table has symbols for them.There are total 118 elements in periodic table.
The elements in a column on the periodic table form a group (or family) because they have similar physical and chemical properties.
A column of elements in the periodic table is called a group or
groups