Atomic NumberAtomic Number of Beryllium
Atomic Number of Beryllium is 4.
Chemical symbol for Beryllium is Be. Number of protons in Beryllium is 4. Atomic weight of Beryllium is 9.0121831 u or g/mol. Melting point of Beryllium is 1278 °C and its the boiling point is 2970 °C.
» Boiling Point » Melting Point » Abundant » State at STP » Discovery YearAbout Beryllium
Beryllium is a softish metal of grey and silver color. It has quite a low density and quite a high melting point for the light metals of the Periodic Table. Beryllium is an alkaline metal which is toxic and resists to oxidation in normal temperatures. It is usually alloyed with such metals as nickel and copper to produce various types of wires, contacts, springs, etc., especially for producing aircrafts, communication devices, and many other things. This chemical element can be found in about 30 natural sources, including precious stones like aquamarine, emerald, and others, thus used in jewelry.
Use of Beryllium
Beryllium (Be), a light and strong metal, is used in metallurgy as a hardening agent. One of the most common applications of beryllium is in making windows for X-ray tubes. This element is often used for making accelerometers, gyroscopes and building some parts for aircraft, guided missiles, space vehicles, etc. There is another interesting usage of Beryllium. Beryllium mirror is used by NASA for the James Webb Space Telescope because it holds its shape at cryogenic temperatures.
Beryllium is also used in electronics, healthcare, acoustics, and some different applications too.
Compounds with Beryllium
- BeO: Beryllium oxide
- BeCl2: Beryllium chloride
- Be4O(C2H3O2)6: Basic beryllium acetate
Properties of Beryllium Element
| Atomic Number (Z) | 4 |
|---|---|
| Atomic Symbol | Be |
| Group | 2 |
| Period | 2 |
| Atomic Weight | 9.0121831 u |
| Density | 1.85 g/cm3 |
| Melting Point (K) | 1560 K |
| Melting Point (℃) | 1278 °C |
| Boiling Point (K) | 2742 K |
| Boiling Point (℃) | 2970 °C |
| Heat Capacity | 1.825 J/g · K |
| Abundance | 2.8 mg/kg |
| State at STP | Solid |
| Occurrence | Primordial |
| Description | Alkaline earth metal |
| Electronegativity (Pauling) χ | 1.57 |
| Ionization Energy (eV) | 9.3227 |
| Atomic Radius | 105pm |
| Covalent Radius | 90pm |
| Valence Electrons | 2 |
| Year of Discovery | 1797 |
| Discoverer | Vauquelin |