Type of ion formed in a chemical
reaction
Element
Phase at room
temperature
Reactivity
w
Positive
Solid
Highly reactive
Exhibits
х
Does not form ions
Gas
Non-reactive
Y
Negative
Gas
Highly reactive
z
Positive
Liquid
Somewhat reactive
Using your knowledge of periodic properties and trends, how would these elements best be classified and why?
A. Elements W and Z are metals, but Element Z has fewer valence electrons. Elements X and Y are nonmetals, but Element Y is a
halogen