How many elements are accommodated in the fifth period of the long form of the periodic table ?

The number of periods in the long form of the periodic table is:

How many elements are present in the 5 ^(th) period of the long form peripodic table ? Give a possible reason .

Which of the elements whose atomic numbers are given below, cannot be accommodated in the present set up of the long form of the periodic table?

Which of the elements whose atomic numbers are given below, cannot be accommodated in the present set up of the long form of the periodic table?

The number of elements which can be accommodated in the present set-up of the long from of the periodic table is :

The number of elements which can be accommodated in the present set-up of the long from of the periodic table is :