Question

In the long form of the periodic table, the valence shell electronic configuration of 5s2 5p4 corresponds to the element present in : (1) Group 16 and period 6 (2) Group 17 and period 5 (3) Group 16 and period 5 (4) Group 17 and period 6

Answer 1

5s2 5p4 corresponds to Tellurium (Te)
It is in Group 16 Period 5

Answer 2

Answer: Option (3) is the correct answer.

Explanation:

Atomic number of tellurium is 52 and its electronic configuration is as follows.

               $[Kr]4d^{10}5s^{2}5p^{4}$

This means that the electronic configuration provided in the question is same as the electronic configuration of tellurium.

Tellurium belongs to group 16 and lies in period 5.

Thus, we can conclude that in the long form of the periodic table, the valence shell electronic configuration of $5s^{2} 5p^{4}$ corresponds to the element present in group 16 and period 5.