There is plenty of information about the Elements of the Periodic Table. Here you two interesting links where you can find the main characteristics of all elements. Please visit them and you will get all the information you need for your project. The first is a interactive link, just click on the element of your interest and you will get information about it.

Beryllium is a relatively rare element in both the Earth and the universe because it is not synthesized in stars. The element is not known to be necessary or useful for either plant or animal life.

Beryllium is found naturally only combined with other elements in minerals because it is a bivalent element. If you look at his main characteristics on the first link above, you will understand the concept of bivalence . Notable gemstones which contain beryllium include beryl (aquamarine, emerald) and chrysoberyl. The free element is a steel-gray, strong, lightweight brittle alkaline earth metal.

Beryllium is primarily used as a hardening agent in alloys, notably beryllium copper. Structurally, beryllium's very low density (1.85 times that of water), high melting point (1287 C), high temperature stability and low coefficient of thermal expansion, make it in many ways an ideal aerospace material, and it has been used in rocket nozzles and is a significant component of planned space telescopes.

Because of its relatively high transparency to X-rays and other ionizing radiation types, beryllium also has a number of uses as filters and windows for radiation and particle physics experiments.

Commercial use of beryllium metal presents technical challenges due to the toxicity (especially by inhalation) of beryllium-containing dusts. Beryllium produces a direct corrosive effect to tissue, and can cause a chronic life-threatening allergic disease called berylliosis in susceptible persons.