7th Grade Science Homework Help?!?!?

Element X exists as a nonpolar molecule made of two identical atoms. When individual atoms of element X react with sodium, they form ions with a 2- charge. What group of elements does element X belong to? How many valence electrons does element X have? Sodium and react with element X to form a compound. How many atoms of sodium are needed for each atom of element X? fourmula? How many covalent bonds can element X form?