Question

Which of the following remains constant while moving down the group of the periodic table?​

Answer 1

Explanation:

Moving down a group in the periodic table, the number of filled electron shells increases. In a group, the valence electrons keep the same effective nuclear charge, but now the orbitals are farther from the nucleus. Therefore, the nucleus has less of a pull on the outer electrons and the atomic radii are larger.

Answer 2

valence electrons remains constant while moving down the group of the periodic table