Question

which of the following remains constant while moving down the group of the periodic table
(1) atomic radius
(2) metallic character
(3) number of shells in the atom
(4) valence elecron​

Answer 1

Answer:

valance electrons remain same as the valance electron of the particular element states its group

eg. sodium

     2,8,1 hence it belongs to grp 1

Explanation:

Answer 2

Valence electron remains constant while moving down in a group of the periodic table.

• There are many similarities and dissimilarities observed in the chemical elements of a same group of the periodic table.
• But, the number of valence electrons of the elements of a same group, always remains constant.
• For, example all the Group 1 elements have a valency of 1.

H = 1 , Na = 2,8,1 , Li = 2,8,8,1 and so on.

• Elements which are of other groups also have same constant valence electron numbers.