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.

Ge ( Germanium)

Explanation:

The atomic mass of Ge is 72.61 and the atomic mass of S is 32.066 and the mass of Cd is 112.411 so being the only element in the same group as Si.

there all right good

explanation:

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.