Question

1. The atomic number of an element X is 20
(a) Determine the position of the element X in the periodic table.
(b) Write the formula of the compound formed when X reacts with another
element Y (atomic number 8)
(c) What would be the nature (acidic or basic) of the compound formed? Justify
your answer.​

Answer 1

(a) calcium lies in group 2

(b) CaO ( calcium oxide)

(c) CaO is basic in nature