Question

write four features of mendeleevs periodic table

Answer 1

Elements were arranged in vertical columns called groups according to their resemblance in properties.
The periodic table had 8 groups and 7 periods.
Since only 63 elements were known at that time, he had left gaps for undiscovered elements.

Answer 2

ANSWER..

☆☆•••☆☆FEATURES OF MENDELEEV'S PERIODIC TABLE:-

••• He gave simplified and systematic way for study of elements.

••• Some gaps were left for the undiscovered elements like gallium, Scandium and Germanium.

••• Predict properties of elements on the basis of their positions in the periodic table.

••• Accommodate noble gases when they were discovered without disturbing the original arrangement.

☆☆☆☆☆ HOPE THIS WILL HELP YOU....