Explain the double covalent bonding of oxygen.Why is oxygen denoted as O2 ? Why cannot we denote it as O?Why doesn't it form an octet? 

Asked by mathew | 5th Nov, 2015, 01:01: PM

Expert Answer:

Oxygen is a non-metal. An oxygen atom has 6 electrons in its outer shell. Oxygen is in group 6 of the periodic table. Two oxygen atoms will each share two electrons to form two covalent bonds and make an oxygen molecule (O2).



By sharing the four electrons where the shells touch each oxygen atom can count 8 electrons in its outer shell. Two oxygen atoms achieve stable structures by sharing two pairs of electrons and the O2 molecule will not (normally) react further with other oxygen atoms. Note the 2 pairs (4 electrons) shared between the atoms. Each electron pair is one bond. Oxygen has two bonds between its atoms. This is called a double bond.

Answered by Arvind Diwale | 6th Nov, 2015, 09:47: AM