chemistry 6279755 1280 How to Write Chemical Formula of Binary Covalent Compounds

How to Write Chemical Formula of Binary Covalent Compounds


In this post we will talk about How to Write Chemical Formula of Binary Covalent Compounds. Covalent compounds generally contain only nonmetals. When naming covalent compounds, the last word in the name of a covalent compound usually has an -ide suffix along with a multiplying prefix.

A binary compound contains only two atoms.

Covalent compounds prefixes

Here are some of the common prefixes found in covalent compounds:

  • mono – means 1
  • di – means 2
  • tri – means 3
  • tetra – means 4
  • pent – means 5

Examples


Chemical formula of carbon monoxide

Carbon monoxide contains two nonmetals, carbon and oxygen. Since there is no prefix behind carbon, the carbon monoxide molecule contains only one atom of carbon. The second nonmetal, oxygen, has a mon(o) prefix which means there is one oxygen atom in the molecule.

Therefore, the chemical formula of carbon monoxide is CO.

Chemical formula of nitrogen monoxide?

Nitrogen monoxide contains two nonmetals, nitrogen and oxygen. Since there is no prefix behind nitrogen, the nitrogen monoxide molecule contains only one atom of nitrogen. The second nonmetal, oxygen, has a mon(o) prefix which means there is one oxygen atom in the molecule.

Therefore, the chemical formula of nitrogen monoxide is NO.

Chemical formula of dinitrogen oxide?

Dinitrogen oxide contains two nonmetals, nitrogen and oxygen. Since there is a di- prefix behind nitrogen, the dinitrogen oxide molecule contains 2 atoms of nitrogen. The second nonmetal, oxygen, has no prefix which means there is one oxygen atom in the molecule.

Therefore, the chemical formula of dinitrogen oxide is N2O.

Chemical formula of nitrogen dioxide?

Nitrogen dioxide contains two nonmetals, nitrogen and oxygen. Since there is no prefix behind nitrogen, the nitrogen dioxide molecule contains only one atom of nitrogen. The second nonmetal, oxygen, has a di- prefix which means there are 2 oxygen atoms in the molecule.

Therefore, the chemical formula of nitrogen dioxide is NO2.


Chemical formula of carbon dioxide?

Carbon dioxide contains two nonmetals, carbon and oxygen. Since there is no prefix behind carbon, the carbon dioxide molecule contains only one atom of carbon. The second nonmetal, oxygen, has a di- prefix which means there are 2 oxygen atoms in the molecule.

Therefore, the chemical formula of carbon dioxide is CO2.

Chemical formula of dinitrogen trioxide?

Dinitrogen trioxide contains two nonmetals, nitrogen and oxygen. Since there is a di- prefix behind nitrogen, the dinitrogen trioxide molecule contains 2 atoms of nitrogen. The second nonmetal, oxygen, has a tri- prefix which means there are 3 oxygen atoms in the molecule.

Therefore, the chemical formula of dinitrogen trioxide is N2O3.

Chemical formula of nitrogen triiodide?

Nitrogen triiodide contains two nonmetals, nitrogen and iodine. Since there is no prefix behind nitrogen, the nitrogen triiodide molecule contains only one atom of nitrogen. The second nonmetal, iodine, has a tri- prefix which means there are 3 iodine atoms in the molecule.

Therefore, the chemical formula of nitrogen triiodide is NI3.

Chemical formula of sulphur trioxide?

Sulphur trioxide contains two nonmetals, sulphur and oxygen. Since there is no prefix behind sulphur, the sulphur trioxide molecule contains only one atom of sulphur. The second nonmetal, oxygen, has a tri- prefix which means there are 3 oxygen atoms in the molecule.

Therefore, the chemical formula of sulphur trioxide is SO3.


Practice Questions For You

Write down the chemical formula of:

  1. boron trifluoride
  2. arsenic trifluoride
  3. phosphorus tribromide
  4. diphosphorus trioxide
  5. silicon tetrachloride
  6. carbon tetrachloride
  7. selenium tetrafluoride
  8. arsenic pentafluoride
  9. dinitrogen pentoxide