Question

Q 8. Which of the following remains constant while moving down the group of the periodic table? *
(a) Atomic radius
(b) Metallic character
(c) Number of shells in the atom
(d) Valence electrons​

Answer 1

Answer :-

your ans is (d) valence electrons

Explanation :-

All the elements of the group of the periodictable have the same number of valence electrons

Ex :- All the elements of the group 1 have one valence electron each in their atoms

All the elements of group 18 have 8 valence electrons each in their atoms , except helium which has only 2 valence electrons in its atom. Al the remaining three properties increase down the group

hopes it helps you

Thank you

Answer 2

Answer: (c) Valence .

Explanation: Elements of the same group have the same number of valence electrons; hence, valency will remain the same. All the remaining three properties increase down the group.

hope it's help u....