Q. 155.0( 2 Votes )

What is meant by

Answer :

Groups are the vertical columns in the modern periodic table.

(i) Elements having same group no. have same no. of valence electrons.


(ii) When we move down in a group, the occupied shells increase.


(iii) Due to introduction of a new shell of electrons, the size of atom increases as we move down in a group.


(iv) The metallic character of elements increases as we move down in a group.


(v) Due to introduction of a new shell of electrons, the size of atom increases, due to which the force of attraction decreases between the nucleus and electrons, As a result nuclear charge decrease.


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