Question

The whole number atomic mass of the elements cobalt (co) and nickel (ni) is the same therefore there was an ambiguity regarding their sequence in mendeleev's periodic table

Answer 1

Answer:

• The whole number atomic mass of the elements cobalt (Co) and nickel (Ni) is the same, that is, 59. Therefore, there was ambiguity regarding the sequence of these elements in Mendeleev's periodic table. Isotopes were discovered a long time after Mendeleev developed the periodic table.

Answer 2

The whole number atomic mass of the elements cobalt (co) and nickel (ni) is the same that is 59. Therefore there was ambiguity regarding the sequence of these elements in Mendeleev's periodic table. Isotopes were discovered a long time after

Mendeleev discovered the periodic table.

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