Take a look in ~ the picture below. Each of those fancy balls is an electron. In an atom, the electron spin roughly the center, also called the nucleus. The electrons like to be in different shells/orbitals. Covering number one have the right to only hold 2 electrons, shell two deserve to hold 8, and for the very first eighteen facets shell three have the right to hold a best of eight electrons. As you learn around elements with much more than eighteen electrons you will find that covering three have the right to hold much more than eight. As soon as one covering is full, the following electron that is added has to move to the next shell.So... Because that the element of LITHIUM, you currently know that the atomic number tells you the variety of electrons. That means there are 3 electron in a lithium atom. Looking at the picture, you can see there room two electrons in shell one and only one in shell two.

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► more about the background and locations to uncover lithium.► Next element of the regular table.
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Lithium OxideTwo lithium (Li) atoms deserve to bond with one oxygen (O) atom, making the formula Li2O. Oxygen likes to have actually two added electrons to make it happy. Each lithium atom offers one. You can see that the oxygen atom has eight electron (6 the its own, and also one from every lithium), and the two lithium atoms have actually two electron each.

See more: How Many Oreos Are In A Pack, How Many Oreos Are In A Small Pack


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Lithium FluorideOne lithium atom can combine with one fluorine (F) atom. Together, they do the formula LiF. Fluorine has actually seven electron of it"s own. Lithium provides up that is one electron to do both atom happy. Therefore the fluorine atom has actually eight electrons, and a filled external shell.
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