Physical Science 1000 Bonding. Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of.

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Presentation transcript:

Physical Science 1000 Bonding

Counting Electrons Total Electrons and Valence Electrons Valence Electrons – number of electrons in the outer shell of an atom The valence Electrons are the only ones used in Bonding Hey, ….. That number matches the group number on my periodic table in a way!!!!

Valence Electrons 1 valence e- 2 valence e- 3 valence e- 4 valence e-5 valence e- 6 valence e- 7 valence e- 8 valence e-

Noble Gases Elements in group 8 on the periodic table Each has 8 electrons in its outer shell Each is very stable – they don’t react

Ionic Bond bond formed by the giving or taking of electrons

Properties of Ionic Compounds Formed from a metal and a non metal Most are soluble in water Form crystalline lattices

Covalent Bond bond formed by the Sharing of electrons

Properties of Covalent Compounds Formed by two nonmetals Solubility varies The strongest bond

Polar Covalent Bond Bond formed with the unequal sharing of electrons due to one atom being more electronegative Electrongeativity -The attraction an atom has for a pair of shared electrons S+ S-

More Electronegative