Periodic Table Of Elements
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Today we will be learning about the periodic table of elements.
The periodic table of elements was discover by Dmitri Mendeleev in 1869. He began arranging the elements by their atomic mass.
Dmitri Mendeleev also realized that the psychical and chemical properties of elements are related to their atomic mass.
Each elements have their own atomic number, symbol and mass.
For example, Krypton's atomic symbol is Kr, the number is 36 and the mass is 83.798
That is it for today, I hope you learned something new.
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