C18H21Er
1 compound has this formula on CompoundList.
- Molar mass
- 404.63g/mol
- Monoisotopic mass
- 403.0946Da
- Atoms
- 40
- Elements
- 3
The formula C18H21Er describes a molecule made of 18 carbon atoms, 21 hydrogen atoms and 1 erbium atom. It is written in Hill notation: carbon first, then hydrogen, then the other elements 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
- C Carbon × 1853.43%12.011 × 18 = 216.198 g/mol
- H Hydrogen × 215.23%1.008 × 21 = 21.168 g/mol
- Er Erbium × 141.34%167.26 × 1 = 167.260 g/mol
Compounds with the formula C18H21Er
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 1 of 1 compounds
Frequently asked questions
What is the molar mass of C18H21Er?
The molar mass of C18H21Er is 404.63 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms and 1 erbium atom. The monoisotopic mass is 403.0946 Da.
How many compounds have the formula C18H21Er?
CompoundList lists 1 compound with the molecular formula C18H21Er, including Tris(methylcyclopentadienyl)erbium. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.