Take a look in ~ the photo below. Every of those colored balls is one electron. In an atom, the electrons spin about the center, additionally called the nucleus. The electrons like to be in different shells/orbitals. Covering number one can only organize 2 electrons, shell two deserve to hold 8, and for the an initial eighteen aspects shell three have the right to hold a maximum of eight electrons. Together you learn about elements with an ext than eighteen electron you will find that covering three have the right to hold more than eight. As soon as one shell is full, the following electron that is added has to relocate to the following shell.So... Because that the element of SODIUM, you already know the the atomic number speak you the number of electrons. That way there are 11 electrons in a sodium atom. Looking at the picture, you deserve to see there space two electrons in covering one, eight in shell two, and also only one in covering three.


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► more about the background and locations to find sodium.► Next aspect of the regular table.
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Sodium ChlorideThis is sodium chloride, also known together table salt. Most civilization scientist understand that the formula for salt is NaCl. One salt (Na) atom provides it\"s electron to one chlorine (Cl) atom. Chlorine then has the eight electrons in its external shell to do it \"happy\". Sodium is \"happy\" since it has actually now given up that is one extra electron.
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Sodium OxideSo currently you have Na2O. Once sodium (Na) atoms bond v one oxygen (O) atom, there have to be 2 sodium atoms, each through an extra electron. Each of these salt atoms offers oxygen one electron, permitting oxygen to have actually a full shell v eight electrons. See how the electrons are shared?
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- aramuseum.org: regular Table- aramuseum.org: Atoms- aramuseum.org: Compounds- aramuseum.org: Alkali Metals- aramuseum.org: Lithium- aramuseum.org: Chlorine- aramuseum.org: chemical Bonds- Geography4Kids: composition of Earth- Geography4Kids: Seawater
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