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Chemistry

Oxygen Molecule (O₂) Covalent Bonding

By 21 July 2022No Comments

Oxygen structure and the periodic table

Oxygen is an element in group 6 of the periodic table (sometimes written as group 16). This group number tells us that there are 6 electrons in the outermost electron shell. Also, remember that atoms are electrically neutral because the number of protons (+1 charge) and electrons (-1 charge) are equal. Learn more about atomic structure.

Oxygen electronic structure explained with a dot and cross diagram

Oxygen has 6 electrons in its outermost shell. That means it needs two electrons to gain a complete outer shell. 

Two oxygen atoms come together and form a double covalent bond by sharing their two electrons with each other. This creates a strong bond and oxygen molecules are more stable in this form than individual atoms. Oxygen is typically found in this form in the atmosphere due to this extra stability.

Oxygen molecule (O2) covalent bonding

Covalent bonding of an oxygen molecule. Remember that many oxygen molecules are often present in the same area and weak intermolecular forces will hold them together.

How many bonds can oxygen form?

Oxygen can form 1 double bond with another oxygen atom. This is where two electrons from each oxygen atom are shared with another oxygen atom. In total, this means that 4 electrons are shared.

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