An unknown element has chemical behavior similar to that of silicon (si) and lead (pb). the unknown element has a mass greater than that of sulfur (s), but less than that of cadmium (cd). use the periodic table to determine the identity of the unknown element.

The answer to your question is Germanium

Explanation:

Process

Follow the clues to find the answer

1.- Behavior similar to that of Si and Pb.

Elements of the same group have similar properties so this element could be:

    Carbon, Germanium or Tin

2.- Mass greater than sulfur

     Sulfur has a mass of 32

     So, the element we are looking for could not be Carbon

3.- Mass less than Cadmium

     Cadmium has a mass of 48, so this element could no be Tin

4.- The element we are looking for is Germanium.

bcde is the incorrect answer it is a