CompoundList
Molecular formula

Cu2O

2 compounds have this formula on CompoundList.

Molar mass
143.09g/mol
Monoisotopic mass
141.8541Da
Atoms
3
Elements
2

The formula Cu2O describes a molecule made of 2 copper atoms and 1 oxygen 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

  • Cu Copper × 288.82%
    63.546 × 2 = 127.092 g/mol
  • O Oxygen × 111.18%
    15.999 × 1 = 15.999 g/mol
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Compounds with the formula Cu2O

Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.

Showing 1 to 2 of 2 compounds

Frequently asked questions

What is the molar mass of Cu2O?

The molar mass of Cu2O is 143.09 g/mol, calculated from standard atomic weights for 2 copper atoms and 1 oxygen atom. The monoisotopic mass is 141.8541 Da.

How many compounds have the formula Cu2O?

CompoundList lists 2 compounds with the molecular formula Cu2O, including Cuprous oxide, Copper oxide (Cu2O). Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.