The atomic number of an element 'X' is 20.
(i) Determine the position of the element 'X' in the periodic table.
(ii) Write the formula of the compound formed when 'X' reacts/combines with another element 'Y' (atomic number 8).
(iii) What would be the nature (acidic or basic) of the compound formed ? Justify your answer.

Explanation

Electronic configuration = 2,8, 8, 2.
(i) .X. is present in the `2^(nd)` group and `4^(th)` period of the periodic table.
(ii) XY.
(iii) Basic because X is a metal and the oxides of metals are basic in nature (Y, Atomic number = 8, Oxygen).