Question

Write the disadvantages Mandlev periodic table​

Answer 1

Answer:

Disadvantages: He couldn't allocate a correct position to hydrogen. Atomic masses didn't increase in a regular manner, so it was impossible to predict how many elements could be discovered between two elements. Isotopes of all elements posed a problem to his periodic table.

Explanation:

Answer 2

Answer:

Disadvantages: He couldn't allocate a correct position to hydrogen. Atomic masses didn't increase in a regular manner, so it was impossible to predict how many elements could be discovered between two elements. Isotopes of all elements posed a problem to his periodic table.

Explanation:

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