Rubidium, Arsenic, Silicon, Antimony are the substances that can for the basic compounds. I think sulfur also play its role somehow in formation of basic compounds.
Answer: The correct answer is : Rubidium, arsenic, silicon and antimony
Explanation: The basic compounds are formed by a metal and oxygen and are called basic oxides. Rubidium, arsenic, silicon and antimony are metals, so they are able to form basic compounds. The other elements are nonmetals like the case of xenon which is a gas.
