How many types of crystal structures exist?

What is the formula for the Seebeck coefficient? (Remember:  V is the change in voltage and  T is the change in temperature). 1.S = -  V/  T 2.S = -  T/  V 3.S =  V/  T 4.S =  T/  V

What material is studied in Dr. Constantin’s group? 1.Manganese Oxide 2.Magnesium Oxide 3.Magnesium Nitride 4.Manganese Nitride

What is the difference between a metal and a semiconductor (both at the room temperature)? 1.Only metal conduct electricity 2.Only semiconductors conduct electricity 3.Both conduct electricity

What type of materials has the largest bandgap? 1.Metals 2.Semiconductors 3.Insulators