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Periodic Law states that: When the Elements are arranged in order of increasing atomic number, there is a periodic pattern
in their physical and chemical properties. There are 110 Elements in the New Periodic Table.
Periodic table was first invented by Dimitri Mendeleev from Russia.
He had arranged the elements by increasing atomic masses.
His periodic table design had blanks in it because there were unknown atomic elements with the appropriate properties discovered.
By early 1900's (1914) Prof Henry Moseley, a British Physicist, was able to determine the atomic numbers
of all the known elements using an experimental
Molecular Weight Calculator
Select Compound, Element from Select Box or enter Chemical Formula and click on calculate.
Result will be displayed.