2. Click Pause (-). Elements can be classified as metals and nonmetals. Metals do not hold on to their valence electrons very tightly, while nonmetals hold their electrons tightly.
Electron affinity is a measure of how tightly the valence electrons are held.
A. Try pulling an electron away from each atom. Based on this experiment, which atom
is a metal?
Which is a nonmetal?
B. Try moving an electron from the metal to the nonmetal. What happens?