Periodic table of the elements. Periodic table of the elements, in chemistry, the organized array of all the chemical elements in order of increasing atomic number—i.e., the total number of protons in the atomic nucleus
The periodic table organizes elements according to increasing atomic numbers.
The total number of protons present in an atom is known as the atomic number of that atom. The atomic number has no correlation either with the number of neutrons or the number of electrons present inside an atom.
While the atomic mass of an atom is the sum of the total number of protons and the number of neutrons present inside of any atom.
Mendeleev's periodic table was made on the basis of the increasing atomic mass of the elements.
The modern periodic table which is developed by henry Moseley with the help of his X-ray gun experiment. Every single atom belonging to the periodic table has unique atomic numbers for themselves depending upon the number of protons present in its nucleus.
Thus, The classification of elements in the modern periodic table is based on the increase in the atomic numbers of the elements.
Learn more about the atomic number from here
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