What are the formula of hydrides in Mendeleev periodic table
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Classification of Elements by Mendeleev
In order to classify elements, Mendeleev considered atomic masses as fundamental property. Based on atomic mass Mendeleev compared elements based on their atomic masses. ... With the physical and chemical properties he found that every eighth element has properties similar to first.
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Using the given general formulae; the formula of oxides and hydrides can be written for the elements of each group. For example; hydrogen, sodium, potassium, etc. belong to the first group. The general formula of oxides for the elements of 1st group is R2O. Accordingly they form H2O, Na2O, K2O, etc.
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