Covalent Bondin1 - CovalentBonding ."Ionlyneedonemore...

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Covalent Bonding In  covalent bonding  atoms share electrons. Take for example the H 2  molecule. Each hydrogen atom says, "I only need one more  electron to be like a noble gas (helium) ." Since each hydrogen has only one electron,  when two hydrogens get together they can share their electrons. So each hydrogen atom now sees 2 electrons when it is  covalently bonded  to another  hydrogen atom. Pure hydrogen exists as H 2  molecules. The same is true for all of the  halogens in column 7A: Pure chlorine exists as Cl 2 Pure bromine exists as Br 2 Pure iodine exists as I 2 Chemists often use the symbol "-" to represent a bond. For example, H -H is a "hydrogen  molecule" andCl -Cl is a "chlorine molecule." The line in between the two atoms means  that they are sharing two electrons between them. Let's take oxygen as another example.  Oxygen atoms like to combine to form O
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This note was uploaded on 11/22/2011 for the course CHEMISTRY CHM1025 taught by Professor Laurachoudry during the Fall '10 term at Broward College.

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Covalent Bondin1 - CovalentBonding ."Ionlyneedonemore...

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