Rewrite the following statement after correction, if necessary :

Group have elements with consecutive atomic numbers.

Given alongside is a part of the periodic table. As we move vertically downward from Li to Fr :

(i) What happens to the size of atoms.

(ii) What happens to their metallic character ?

Name two properties of the elements whose magnitude change when going from top to bottom in a group of periodic table. In what manner do they change ?

Explain why, the first period of the modern periodic table has only two elements whereas second period has eight elements

Why do elements in the same group show similar properties but elements in different group show different properties ?