Assessment 4. Element X is a metal that reacts to form XCI. It has the smallest metallic radius of its group. What is element X?

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions.what elemental classification does oxygen belongto? done

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.