Question

explain the variation of atomic radii of Mendeleev's periodic table​

Answer 1

Answer:

A new energy shell is added at each succeeding element. The valence electrons lie farther and farther away from the nucleus. As a result, the attraction of the nucleus for the electron decreases. Hence, the atomic radius increases

Answer 2

Explanation:

In mendeleev's periodic table elements are arranged in increasing order of thier atomic radius.

Atomic radius is the distance between the centre of the atom and it's outermost shell. New shells are added to the atoms of the elements as we go down from top to bottom in a group. The outermost electrons go further and further away from the nucleus, extending the radius and ultimately increasing the size of the atom.