Take a look at the snapshot below. Every of those colored balls is an electron. In an atom, the electrons spin around the center, likewise called the nucleus. The electrons like to be in separate shells/orbitals. Covering number one deserve to only hold 2 electrons, covering two deserve to hold 8, and for the first eighteen elements shell three can hold a maximum of eight electrons. As you learn around elements with much more than eighteen electrons you will uncover that covering three can hold more than eight. When one covering is full, the following electron the is included has to relocate to the following shell.So... Because that the element of MAGNESIUM, you already know the the atomic number tells you the number of electrons. That method there are 12 electrons in a magnesium atom. Looking in ~ the picture, you have the right to see there are two electrons in shell one, eight in shell two, and two much more in covering three.


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► more about the background and areas to find magnesium.► Next facet of the routine table.
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Magnesium OxideMagnesium (Mg) is able come bond with one oxygen (O) atom. The formula of the compound is MgO. You deserve to see in the dot structure that the two atoms re-publishing four various electrons. As soon as a shortcut is make with 4 electrons, that is referred to as a double bond. That is stronger than a solitary bond i beg your pardon only supplies two electrons.
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Magnesium DichlorideMagnesium dichloride is frequently known as magnesium chloride. You deserve to use either name once talking about the compound. Since magnesium (Mg) has two extra electrons it looks approximately for elements which can use them. In this case, magnesium bonds through two chlorine (Cl) atom which each require one electron. With the extr electron, chlorine has actually a to fill shell and also magnesium loses two electrons. Magnesium also has a to fill shell!
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