It is also diatomic therefore it needs 2 electrons to complete its octet which it easily gets from another oxygen. This formula is given so because oxygen usually combines with another oxygen by forming a covalent bond. The chemical formula of oxygen also known as dioxygen is O2. Examples of molecules are: O2 – a simple molecule comprising two atoms of oxygen. When a molecule is formed of different elements, it is called a compound. Two oxygen atoms strongly bind together with a covalent double bond to form dioxygen or O2. Covalent bonds hold the two oxygen atoms and one hydrogen atom together. The substance is called hydroperoxyl radical and can be represented as HO2. Atoms can form molecules by donating, accepting, or sharing electrons to fill their outer shells.Ī molecule does exist that is composed of two oxygen atoms and one hydrogen atom bonded together. The familiar water molecule, H2O, consists of two hydrogen atoms and one oxygen atom these bond together to form water, as illustrated in Figure 1. That’s just one more oxygen than water, but it is a totally different compound.

Two hydrogen (H) atoms can also bond with two oxygen (O) atoms, making the formula H2O2. A single oxygen atom contains six electrons in its outer shell, which can hold a total of eight electrons. What is the name of 2 hydrogen and 1 oxygen?Ī water molecule is made up of two hydrogen atoms and one oxygen atom. 6 What happens when oxygen and water are combined?.5 How do we know H2O is two part hydrogen one part oxygen?.1 What is the name of 2 hydrogen and 1 oxygen?.

2 hydrogen 1 oxygen