Claranae Antoine - ICA 0301 Bonding & Molecular Structure - LEWIS STRUCTURES.docx - ICA 0301 Bonding Molecular Structure LEWIS STRUCTURES Name How

Claranae Antoine - ICA 0301 Bonding & Molecular Structure - LEWIS STRUCTURES.docx

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ICA 0301 Bonding & Molecular Structure - LEWIS STRUCTURES Name___________________ How to draw Lewis structures. 1)Determine the type and number of atoms in the molecule. 2)Write the electron-dot notation for each type of atom in the molecule. 3)Determine the total number of valence electrons available in the atoms to be combined. 4)Arrange the atoms to form a skeleton structure for the molecule. If carbon is present, it is the central atom, Otherwise, the least-electronegative atom is central(except for hydrogen. Which is never central.) Then connect the atoms by electron pair bonds. 5)Add unshared pairs of electron to each nonmetal atom (except hydrogen) such that each is surrounded by eight electrons. 6)Count the electrons in the structure to be sure that the number of valence electrons used equals the number available. Be sure the central atom and other atoms besides hydrogen have an octet. Exceptions to the Octet rule: There are three general exceptions to the octet rule :
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  • Fall '19
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