The atomic number of an element ‘X’ is 20

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).
(in) What would be the nature (acidic or basic) of the compound formed? Justify your answer.

(i) Atomic Number is 20, therefore, electronic configuration is X (20) : 2, 8, 8, 2 Period : 4th ; group: IInd.
(ii) XY
(iii) It is a basic oxide. It forms base, when it reacts with water.