Reactivity and Valence Electrons REINFORCEMENT Review information on reactivity, valence electrons and Lewis Dot structures. Identify each of the following statements as true or false. If it is FALSE, then change the statement to make it TRUE. TRUE FALSE The octet rule allows chemists to predict the placement of electrons around the nucleus. TRUE FALSE The octet rule is used to describe the attraction of elements toward having, whenever possible, eight valence shell electrons (four electron pairs) in their outer shell. TRUE FALSE Except for Carbon all elements can have eight electrons in their outer shell. TRUE FALSE Halogens have eight electrons in their valence shells. TRUE FALSE The octet rule generally works for alkali metals, alkaline earth metals and nonmetals, but not for the transition elements. TRUE FALSE All nonmetals and metals can form compounds that satisfy the octet rule. TRUE FALSE Elements that follow the octet rule have 3 pairs of electrons. TRUE FALSE The most reactive nonmetal is Fluorine (F). TRUE FALSE The most reactive metal is Lithium (Li). TRUE FALSE The octet is a useful rule because it works for all elements. TRUE FALSE Eight is the maximum number of electrons any atom can have. TRUE FALSE Lithium wants to lose one electron. TRUE FALSE Fluorine is not reactive because it has 7 valence electrons (which is close enough to 8). TRUE FALSE Lewis Dot structures show the valence electrons around an element.