An element X from group 2 of the Periodic Table reacts with Y from group 17 to form a compound. Give the formula of the compound.

An element X from group 2 of the periodic table reacts with an element Y from group 17 to form a compound. (a) What is the nature of the compound formed? (b) Sate whether the compound formed will conduct electricity or not. (c) Give the formula of the compoumd formed. (d) What is the valency of element X ? (e) How many electrons are there in the outer most shell of an atom of element Y ?

The elements of a group in the periodic table

An element X from group 2 reacts with element Y from group 16 of the periodic table. (a) What is the formula of the compound formed? (b) What is the nature of bond in the compound formed?

An element X is in group 13 of the periodic table. What is the formula of its oxide?