Molecular formula

HgO

1 compound has this formula on CompoundList.

Molar mass: 216.59g/mol
Monoisotopic mass: 217.9656Da
Atoms: 2
Elements: 2

The formula HgO describes a molecule made of 1 mercury atom 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

Hg Mercury × 192.61%
200.59 × 1 = 200.590 g/mol
O Oxygen × 17.39%
15.999 × 1 = 15.999 g/mol

Look up another formula

Compounds with the formula HgO

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

Showing 1 to 1 of 1 compounds

Mercuric oxide

CAS 21908-53-2HgO

Frequently asked questions

Still have a question?

The help centre explains buying, quotes and supplier badges step by step, or you can write to our team.

Help centre Contact us

What is the molar mass of HgO?

The molar mass of HgO is 216.59 g/mol, calculated from standard atomic weights for 1 mercury atom and 1 oxygen atom. The monoisotopic mass is 217.9656 Da.

How many compounds have the formula HgO?

CompoundList lists 1 compound with the molecular formula HgO, including Mercuric oxide. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.