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.

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

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

The electronic configuration of an element 'X' is 2, 8, 8, 2. To which (a) period and (b) group of the Modern Periodic Table does 'X' belong? State its valency. Justify your answer in each case.

The electronic configuration of an element 'X' is 2, 8, 6. To which group and period of the modern periodic table does 'X' belongs ? State its valency and justify your answer in each case.

The electronic configuration of an element is 2,8,8. In which period does it belong?

If the electronic configuration of an element is 2,8,2, to which period of the Modem Periodic Table does it belong?

The electronic configuration of an element is 2, 8, 5. To which group are period does it belong ?

What is the electronic configuration of the element of atomic number 22. To which group of the periodic table does it belong ?