by their atomic number
the periodic table has all the elments
They are only two Mercury and Bromine.
Elements are arranged by their atomic number. The properties are periodic when arranged in this manner.
In the periodic table, the elements are arranged by atomic number
It is arranged on the acending order of atomic number and repeating periodic properties.
Periodic table was initially arranged by Mendeleev. It was rearranged by Moseley.
Periodic table is arranged by atomic number. elements are arranged in groups and periods.
no, they are arranged by their protons.
The Periodic Table was arranged by atomic number.
Elements are arranged on the Periodic Table in the order of the atomic number, in groups and periods.
The periodic table is arranged from left to right in the order of atomic numbers.
Now modern periodic table is arranged in order of increasing atomic number. The properties are found to be periodic when arranged in this pattern.