An unknown element is a nonmetal and has a valence electron configuration of ns2np4.
a. How many valence electrons does this element have?
b. What are some possible identities for this element?
c. What is the formula of the compound this element would form with potassium?
d. Would this element have a larger or smaller radius than barium?
e. Would this element have a greater or smaller ionization energy than fluorine?