The atomic number of an element ‘X’ is 20. Determine the position of the element ‘X’ in the periodic table

[Murali]

The atomic number of an element ‘X’ is 20.

1. Determine the position of the element ‘X’ in the periodic table.
2. Write the formula of the compound formed when ‘X’ reacts/combines with another element ‘Y’ (atomic number 8).
3. What would be the nature (acidic or basic) of the compound formed? Justify your answer.

Answer:

1. X’ is in the 2nd group and 4th period of the periodic table.
2. 
3. The nature of the compound formed is basic because X is a metal and Y is oxygen. The oxides of metals are basic in nature.