Take a look in ~ the photo below. Each of those colored balls is one electron. In one atom, the electron spin approximately the center, likewise called the nucleus. The electrons like to be in different shells/orbitals. Covering number one have the right to only host 2 electrons, shell two deserve to hold 8, and also for the very first eighteen elements shell three deserve to hold a preferably of eight electrons. As you learn around elements with an ext than eighteen electrons you will uncover that covering three can hold an ext than eight. When one covering is full, the following electron the is added has to relocate to the following shell.So... For the facet of OXYGEN, you currently know that the atomic number tells you the variety of electrons. That means there space 8 electron in one oxygen atom. Looking at the picture, you have the right to see there space two electrons in shell one and also six in covering two.

You are watching: How many electrons does o2 have


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► an ext about the history and areas to find oxygen.► Next facet of the regular table.
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WaterThis is a water molecule. Even though friend find complex names on various other molecules, everyone calls H2O "water". Water is comprised of two hydrogen (H) atoms and one oxygen (O) atom. The formula for water is H2O. The hydrogen atoms have filled orbitals v two electrons and also the oxygen atom is filled v eight electrons.

See more: How Many Nuclei Can A Cell Have More Than One Nucleus Per Cell?


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Lithium OxideTwo lithium (Li) atoms can bond v one oxygen (O) atom, making the formula Li2O. Oxygen likes to have two added electrons to make it happy. Each lithium atom offers one. You deserve to see that the Oxygen atom has actually eight electrons (6 of its own, and also one from each lithium), and the two lithium atoms have two electrons each.
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Hydrogen PeroxideTwo hydrogen (H) atoms can also bond v two oxygen (O) atoms, making the formula H2O2. That"s simply one more oxygen than water, yet it is a entirely different compound. You can see the each that the Oxygen atoms has eight electrons, and the 2 Hydrogens have two electrons each. See just how the electrons room shared?
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- aramuseum.org: periodic Table- aramuseum.org: Atoms- aramuseum.org: Compounds- aramuseum.org: Carbon- aramuseum.org: Nitrogen- aramuseum.org: chemistry Bonds- aramuseum.org: Biochemistry- Geography4Kids: Biosphere- Geography4Kids: Oxygen Cycle- Biology4Kids: cabinet Function
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