Take a look in ~ the photo below. Each of those fancy balls is an electron. In an atom, the electrons spin about the center, additionally called the nucleus. The electrons favor to it is in in separate shells/orbitals. Covering number one can only organize 2 electrons, covering two can hold 8, and also for the first eighteen elements shell three deserve to hold a best of eight electrons. Together you learn around elements with much more than eighteen electrons you will uncover that shell three have the right to hold an ext than eight. As soon as one covering is full, the following electron that is included has to relocate to the following shell.So... For the facet of OXYGEN, you currently know that the atomic number speak you the number of electrons. That means there space 8 electron in one oxygen atom. Looking at the picture, you can see there space two electron in covering one and six in shell two.

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► an ext about the history and areas to uncover oxygen.► Next element of the periodic table.
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WaterThis is a water molecule. Even though girlfriend find complex names on various other molecules, anyone calls H2O "water". Water is made up of 2 hydrogen (H) atoms and one oxygen (O) atom. The formula because that water is H2O. The hydrogen atoms have filled orbitals through two electrons and the oxygen atom is filled through eight electrons.

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Lithium OxideTwo lithium (Li) atoms can bond with one oxygen (O) atom, making the formula Li2O. Oxygen likes to have actually two extr electrons to do it happy. Each lithium atom offers one. You deserve to see the the Oxygen atom has actually eight electrons (6 the its own, and one from each lithium), and also the 2 lithium atoms have actually two electron each.
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Hydrogen PeroxideTwo hydrogen (H) atom can additionally bond through two oxygen (O) atoms, making the formula H2O2. That"s simply one an ext oxygen than water, however it is a completely different compound. You can see the each that the Oxygen atoms has actually eight electrons, and also the 2 Hydrogens have actually two electron each. See how the electrons space shared?
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