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

The electronic configuration of an element Z is 2, 8, 8. (d) What is special about the outermost electron shell of the atom of this element ?

What is the relationship between the electronic configuration of an element and its valency?

What is the relationship between the electronic configuration of an element and its valency?

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

The electronic configuration of an element 'X' is 2, 8, 8, 2. To which period and group of the periodic table does the element 'X' belong ? State its valency. Justify your answer in each case.