Multiple ChoiceWhich group on the periodic table contains the element that has 5 valence electrons and is in period 3?23views
Multiple ChoiceWhich term refers to a set of elements in the periodic table that all have the same number of energy levels (principal shells) in their electron cloud?30views
Multiple ChoiceWhich of the following elements has chemical properties most similar to lithium?32views
Multiple ChoiceWhich of the following elements is a semimetal found in group 8A of the periodic table?41views