Be
Beryllium Symbol (Be)
Beryllium is element 4 of the periodic table. Copy its symbol Be and see its atomic weight, electron configuration and common compounds.
What does Be mean?
Be is the chemical symbol for beryllium, element number 4 in the periodic table. Beryllium is an alkaline earth metal in group 2, period 2. It is a light, stiff metal used in aerospace parts and X-ray windows; its compounds are toxic.
Codes and properties
| Chemical symbol | Be |
|---|---|
| Atomic number (Z) | 4 |
| Standard atomic weight | 9.0122 |
| Group / period | 2 / 2 |
| Element category | alkaline earth metal |
| Electron configuration | 1s² 2s² |
| Common compounds | BeO, BeCl₂ |
How to type Be
- Plain text: type
Be— element symbols are ordinary Latin letters, with the first letter capitalised and the second lowercase. - Subscripts in formulas: use Unicode subscript digits (₀₁₂₃₄₅₆₇₈₉) for formulas such as BeO — copy them from the chemistry keyboard.
- LaTeX: write
\mathrm{Be}in math mode, or use the mhchem package:\ce{Be}. - HTML:
Be; for subscripts use<sub>, e.g.H<sub>2</sub>O.
Frequently asked questions
What is the chemical symbol for beryllium?
The chemical symbol for beryllium is Be.
What is the atomic number of beryllium?
Beryllium has atomic number 4, meaning each atom has 4 protons.
What is the electron configuration of beryllium?
The ground-state electron configuration of beryllium is 1s² 2s².