An element X has four electrons in its outermost orbit. What will be the formula of its compounds with Hydrogen?

Explanation

An element having 4 electrons in the outermost shell will form four covalent bonds to attain stability. Hydrogen has one electron in its outermost shell and needs one more electron to become stable. Therefore, four hydrogen atoms will combine with the element having four valence electrons, forming $XH_4$. ## Page 42