Take a look at the picture below. Every of those fancy balls is an electron. In an atom, the electrons spin around the center, additionally called the nucleus. The electrons prefer to be in different shells/orbitals. Shell number one deserve to only hold 2 electrons, covering two deserve to hold 8, and also for the an initial eighteen facets shell three deserve to hold a best of eight electrons. Together you learn around elements with an ext than eighteen electrons you will find that covering three can hold more than eight. When one covering is full, the following electron that is included has to relocate to the following shell.So... Because that the aspect of SODIUM, you currently know that the atomic number tells you the number of electrons. That way there are 11 electron in a salt atom. Looking in ~ the picture, you deserve to see there space two electron in shell one, eight in shell two, and only one in shell three.


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► much more about the history and places to discover sodium.► Next facet of the periodic table.
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Sodium ChlorideThis is sodium chloride, likewise known together table salt. Most world scientist understand that the formula for salt is NaCl. One sodium (Na) atom offers it"s electron to one chlorine (Cl) atom. Chlorine then has the eight electron in its external shell to do it "happy". Sodium is "happy" due to the fact that it has actually now given up its one extra electron.
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Sodium OxideSo now you have Na2O. Once sodium (Na) atoms bond with one oxygen (O) atom, there have to be two sodium atoms, each v an extra electron. Every of these sodium atoms gives oxygen one electron, permitting oxygen to have a complete shell with eight electrons. See exactly how the electrons room shared?
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