Question

Modern periodic table takes care of three limitations of Mendeleev’s Periodic Table. What were those?​

Answer 1

Explanation:

3.

• Elements were arranged in vertical groups and horizontal periods.
• Elements in same group had the same valency Number of gaps were left for undiscovered elements.
• Property of undiscovered element were predicted

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Answer 2

Answer:

▶Elements were arranged in vertical groups and horizontal peroids. ▶Elements in same group had the same valency. ▶Number of gaps were left for undiscovered elements. ▶Property of undiscovered element were predicted.