Question

In Mendeleev’s periodic table, the elements were arranged in the increasing order of their

atomic

masses but there was some discrepancy while assigning the position of two elements.

Mention

the name of those two elements.​

Answer 1

Answer:

the 2 elements were :

Co (at mass = 58.9) is placed before Ni (at mass = 58.6)

Explanation:

this mistak was cleared in modern periodic table.....

hope it will help you....