Si
3 compounds have this formula on CompoundList.
- Molar mass
- 28.09g/mol
- Monoisotopic mass
- 31.9741Da
- Atoms
- 1
- Elements
- 1
The formula Si describes a molecule made of 1 silicon atom. It is written in Hill notation: with no carbon present, every element is listed in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.
Elemental composition
- Si Silicon × 1100.00%28.085 × 1 = 28.085 g/mol
Compounds with the formula Si
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 3 of 3 compounds
Frequently asked questions
What is the molar mass of Si?
The molar mass of Si is 28.09 g/mol, calculated from standard atomic weights for 1 silicon atom. The monoisotopic mass is 31.9741 Da.
How many compounds have the formula Si?
CompoundList lists 3 compounds with the molecular formula Si, including Silicon, Silicon-32, Silicon-31. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.