Element Beryllium
Beryllium atom is alkaline earth metal atom with atomic number 4. It has a role as a carcinogenic agent, an adjuvant and an epitope. It is an alkaline earth metal atom and a metal allergen.
Beryllium is a hard, grayish metal naturally found in mineral rocks, coal, soil, and volcanic dust. Beryllium compounds are commercially mined, and the Beryllium is purified for use in nuclear weapons and reactors, aircraft and space vehicle structures, instruments, x-ray machines, and mirrors. Beryllium ores are used to make speciality ceramics for electrical and high-technology applications. Beryllium alloys are used in automobiles, computers, sports equipment (golf clubs and bicycle frames), and dental bridges.
Names and Identifiers
Chemical Formula: | Be |
CAS: | 7440-41-7 |
Molecular Weight: | 9.012 g/mol |
EC Number : | 231-150-7 |
MDL Number: | MFCD00134032 |
Color: | steel/lead gray |
Other Names: | Berílio |
PubChem CID: | 5354618 |
IUPAC Name: | Beryllium |
Inchl: | InChI=1S/Be |
InChI Key: | ATBAMAFKBVZNFJ-UHFFFAOYSA-N |
Canonical SMILES: | [Be] |
ICSC Number: | 0226 |
Physical & Chemical Properties
Phase: | Solid |
Density: | 1.85 g/cm³ |
Boiling Point: | 2742 K (2469 °C, 4476 °F) |
Melting Point: | 1560 K (1287 °C, 2349 °F) |
Molecular Formula: | Be |
Flash Point: | n/a |
Exact Mass: | 9.012182 |
Symbol: | |
Signal Word: | Danger |
Hazard Statements: | H301-H315-H317-H319-H330-H335-H350i-H372 |
Precautionary Statements: | P201-P260-P280-P284-P301 + P310 + P330-P304 + P340 + P310 |
Hazard Codes: | T+,T |
Risk Phrases: | R49 |
Safety Phrases: | S53-S45 |
RIDADR: | UN 1567 6.1/PG 2 |
WGK Germany: | 1 |
RTECS: | DS1750000 |
Packaging Group: | III |
Hazard Class: | 8 |
Both stable and unstable isotopes of element beryllium are created in stars, but the radioisotopes do not last long. It is believed that most of the stable beryllium in the universe was originally created in the interstellar medium when cosmic rays induced fission in heavier elements found in interstellar gas and dust
Naturally occurring isotopes
Isotope | Mass/Da | Natural abundance (atom %) | Nuclear spin (I) | Magnetic moment (μ/μN) |
---|---|---|---|---|
9Be | 9.012 182 1(4) | 100 | 3/2 | -1.1779 |
Radiosotope data
Isotope | Mass/Da | Half-life | Mode of decay | Nuclear spin | Nuclear magnetic moment |
---|---|---|---|---|---|
6Be | 6.01973 | 5.9 x 10-21 s | 2p to 4He | 0 | |
7Be | 7.016929 | 53.28 d | EC to 7Li | 3/2 | |
8Be | 8.0053051 | about 7 x 10-17 s | 2α to n | 0 | |
10Be | 10.013534 | 1.52 x 106 y | β– to 10B | 0 | |
11Be | 11.02166 | 13.8 s | β– to 11B, β– + α to 7Li | 1/2 | |
12Be | 12.02692 | 0.024 s | β– to 12B; β– + n to 11B | 0 | |
13Be | 13.0428 | 0.004 s | β– to 13B; β– + n to 12B; β– + 2n to 11B | 0 |