On the basis of electronic configuration of 95 X, the group number andperiod of the element ‘X’ is :

To answer this question, we first need to know the electronic configuration of the element 'X' which is represented by the atomic number 95.

The atomic number 95 corresponds to the element Americium (Am). The electron configuration of Americium is [Rn] 5f7 7s2.

The electron configuration tells us that the outermost electrons of Americium are in the 5f and 7s orbitals.

The group number of an element is determined by the number of electrons in the outermost shell (valence electrons). For Americium, there are 2 electrons in the 7s orbital and 7 in the 5f orbital, making a total of 9 valence electrons. However, for elements in the f-block, the group is often not denoted by the number of valence electrons. Americium is part of the Actinide series in the f-block of the periodic table.

The period number of an element is determined by the highest energy level that is occupied by electrons. For Americium, the highest energy level is 7 (from the 7s2 in the electron configuration), so it is in period 7.

So, the element 'X' (Americium) is in the Actinide series (f-block) and period 7 of the periodic table.