Identify the group and valency of the element having atomic number 119. Also, predict the outermost electronic configuration and write the general formula of its oxide.
Identify the group and valency of the element having atomic number 119. Also, predict the outermost electronic configuration and write the general formula of its oxide.

The modern periodic table has 118 elements divided into seven periods. As a result, the element with atomic number 119 will be in the 8th period of the first group and will have the electronic configuration 8s1 as its outermost electronic configuration. It has a valency of one and belongs to group 1. Its oxide will have the formula M2O.