First of all it is a compound made of different elements, hence it cannot exist in Periodic Table.
Periodic table is composed only of pure elements not in any combined form.
atomic number
Gold is number 79 on the periodic table
the number of helium in the periodic table is 2.
Number 81 on the periodic table is Thallium.
Number 38 on the periodic table is Strontium.
The elements arranged according to their atomic number in the table are called periodic table.
The number of each period in the modern periodic table represents the number of shells. There are 7 periods in periodic table.
It is number 56 on the Periodic Table of Elements
According to the modern periodic table "Elements are the periodic function of their atomic number".They are arranged in increasing atomic no. in the periodic table.
The periodic table is arranged by the Atomic Number
No one give number to elements in periodic table. they have been calculated
The periodic table organizes the elements by atomic number (number of nuclear protons).