Introduction to Chemical Bonding. Bond Formation Ionic Bonds Covalent Bonds. Chemical Bonds. An attractive force that holds atoms together Formation of chemical bonds involves energy Bonds will form if atoms have lower energy than when they are separated
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Introduction to Chemical Bonding
Sodium has one valence electron. It’s looking to lose it
Chlorine has seven valence electrons. It’s looking to gain one
Chlorine now has 17 protons & 18 electrons. It has a negative charge. It is an anion
Sodium now has 11 protons & 10 electrons. It has a positive charge. It is a cation
The negative charge on the chloride ion and the positive charge on sodium ion attract each other and form an ionic bond