how is the problem regarding the position of cobalt and nickel in Mendeleev's periodic table resolved in modern periodic table?
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The problem regarding to position of Cobalt and Nickel in Mentalist periodic table is result in Modern Periodic Table is resolved:
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By replacing the its mass number as a periodic function by the atomic number of periodic function.
It means after the use of atomic number, as the basis for classification of elements it is become easy to place the Cobalt and Nickel elements perfectly.
==============================>>>>>
By replacing the its mass number as a periodic function by the atomic number of periodic function.
It means after the use of atomic number, as the basis for classification of elements it is become easy to place the Cobalt and Nickel elements perfectly.
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Now, according to modern periodic law, the elements are arranged in the order of increasing atomic numbers. So, cobalt with lower atomic number (27) should come first and nickel with highest atomic number (28) should come later, even if their atomic masses are in the wrong order.
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