Which group of elements belong to the same period in periodic table :-

Consider the following elements: Na, Ca, Al, K,Mg, Li (a) Which of these elements belong to the same period of the periodic table? (b) Which of these elements belong to the same group of the periodic table?

(a) What is common in the elements belonging to the same period in the periodic table ? (b) Why are chlorine and bromine kept in the same group in the periodic table ?

Mention any two properties of elements belonging to the same period of periodic table.

Metals belonging to the same group in the periodic table are

Metals belonging to the same group in the periodic table are

Mention any two peoperties of elements belonging to the same group of periodic table .

Mention one similarity in atoms of the elements belonging to the same group of the periodic table.

Select from each of the following sets those elements which belong to the same group of the periodic table ?