Potassium
Magnesium
Nitrogen
Oxygen E. Iron
Answer is Right!
Answer is Wrong!
The answer is E. Iron.
The other four elements (potassium, magnesium, nitrogen, and oxygen) are all non-metals. Iron is a metal.
Non-metals are elements that are not shiny, do not conduct electricity, and are not good conductors of heat. They are also brittle and break easily.
Metals are elements that are shiny, conduct electricity, and are good conductors of heat. They are also ductile and can be shaped into wires or other forms.