In which period and group would you place the elements with the following electronic configurations.

Question

In which period and group would you place the elements with the following electronic configurations. (i) 2,8 (ii) 2,5

Philoid · Accepted Answer

(i) The electronic configuration is 2,8. It means that the given element contains 2 electrons in K shell and 8 electrons in L shell. Thus the element contains 2 shells. Thus it belongs to the second period. Secondly, there are 8 electrons in the valence shell (completely filled) which is true for the 18^th group.

(ii) The electronic configuration is 2,5. It means that the given element contains two shells, thus the period is 2^nd. Secondly, there are 5 electrons in the valence shell which is true for the 15^th group.

In which period and group would you place the elements with the following electronic configurations.(i) 2,8 (ii) 2,5

In which period and group would you place the elements with the following electronic configurations.
(i) 2,8 (ii) 2,5