Question

element r belongs to group II are the formula of its oxide is​

Answer 1

formula of its oxide is ro.
As the valency of both oxygen as well element r is 2

Answer 2

Answer:

Elements of the given group II of the periodic table are known as the alkaline earth metals in chemistry.

They are generally basic in nature. These elements readily lose electrons to form cations with a positive charge of +2.

If R is considered as the general element of group 2 of periodic table, then it forms oxides with formula RO.

Explanation: