Question

Element belonging to same group have the same valency

Answer 1

Explanation:

Elements in same group show same valency because they have same number of electrons in ther outermost shell i.e. Valence shell.Since valency depends upon the valence electrons so they have same valency. Elements in the same group have same valancy.

Answer 2

point 1 the valency of an electron is determined with the help of the valence electrons in the outermost shell of an atom of an element all the electric all the elements in the same group have the same number of valence electron that for the element in the same group should have the same valency for example the elements of the group one contain only one valence electron the valency of an element of group one is one similarly for group to the valency is Tu