Covalent Bond

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Information about Covalent Bond
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Published on April 25, 2009

Author: ankush85

Source: authorstream.com

Slide 1: BONDING Slide 2: Covalent Bonds Slide 3: LET’S FIRST REVIEW IONIC BONDING Slide 4: In an IONIC bond, electrons are lost or gained, resulting in the formation of IONS in ionic compounds. Slide 5: F K Slide 6: F K Slide 7: F K Slide 8: F K Slide 9: F K Slide 10: F K Slide 11: F K Slide 12: F K The compound potassium fluoride consists of potassium (K+) ions and fluoride (F-) ions Slide 13: F K + _ The ionic bond is the attraction between the positive K+ ion and the negative F- ion Slide 14: So what are covalent bonds? Slide 15: In covalent bonding, atoms still want to achieve a noble gas configuration (the octet rule). Slide 16: In covalent bonding, atoms still want to achieve a noble gas configuration (the octet rule). But rather than losing or gaining electrons, atoms now share an electron pair. Slide 17: In covalent bonding, atoms still want to achieve a noble gas configuration (the octet rule). But rather than losing or gaining electrons, atoms now share an electron pair. The shared electron pair is called a bonding pair Slide 18: Cl2 Chlorine forms a covalent bond with itself Slide 19: Cl Cl How will two chlorine atoms react? Slide 20: Cl Cl Each chlorine atom wants to gain one electron to achieve an octet Slide 21: Cl Cl Neither atom will give up an electron – chlorine is highly electronegative. What’s the solution – what can they do to achieve an octet? Slide 22: Cl Cl Slide 24: Cl Cl Slide 25: Cl Cl Slide 26: Cl Cl octet Slide 27: Cl Cl circle the electrons for each atom that completes their octets octet Slide 28: Cl Cl circle the electrons for each atom that completes their octets The octet is achieved by each atom sharing the electron pair in the middle Slide 29: Cl Cl circle the electrons for each atom that completes their octets The octet is achieved by each atom sharing the electron pair in the middle Slide 30: Cl Cl circle the electrons for each atom that completes their octets This is the bonding pair Slide 31: Cl Cl circle the electrons for each atom that completes their octets It is a single bonding pair Slide 32: Cl Cl circle the electrons for each atom that completes their octets It is called a SINGLE BOND Slide 33: Cl Cl circle the electrons for each atom that completes their octets Single bonds are abbreviated with a dash Slide 34: Cl Cl circle the electrons for each atom that completes their octets This is the chlorine molecule, Cl2 Slide 35: O2 Oxygen is also one of the diatomic molecules Slide 36: How will two oxygen atoms bond? Slide 37: Each atom has two unpaired electrons Slide 44: Oxygen atoms are highly electronegative. So both atoms want to gain two electrons. Slide 45: Oxygen atoms are highly electronegative. So both atoms want to gain two electrons. Slide 50: O O Both electron pairs are shared. Slide 51: 6 valence electrons plus 2 shared electrons = full octet O O Slide 52: 6 valence electrons plus 2 shared electrons = full octet O O Slide 53: two bonding pairs, O O making a double bond Slide 54: For convenience, the double bond can be shown as two dashes. Slide 55: This is the oxygen molecule, O2

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