[" The electronic configuration of an element is: "2(K),8(L),5(M)" .Predict its "],[" valency."]

The electoni configuration of an element is : 2(K),8(L),5(M). Predict its valency.

The electronic configuration of an element is 2, 8, 7. What is its expected valency ?

The valence shell electronic configuration of VA group elements is :

The electronic configuration of an element 'X' is 2,8,8,2. Write its (i) group number, (ii) period number and (iii) the number of valence electrons in its atom. Justify your answer in each case.