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25 Cards in this Set
- Front
- Back
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bond |
a force that holds 2 atoms together in a molecule |
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bond energy |
energy required to break a bond |
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why do bonds occur |
elements bond in order to complete their valence electron shell |
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ionic bonds |
a metal and a non metal transfer and electron due to the attraction of a positive an negative e- |
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covalent bonds |
equal sharing of an electron DIATOMIC molecules |
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polar covalent bonds |
unequal sharing of e- 2 non metals |
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electro negativity |
the ability of an element to compete for electrons w/the element its bonded to |
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what side of the periodic table does electro negativity increase on |
the upper right |
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dipole moment |
shows the separation of charges in a molecule |
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lewis structures |
show the arrangement of valence e- in a compound and bonds between atoms and non bondin valence e-'s (lone pairs) |
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Lewis structure exceptions: |
hydrogen only needs 2 e- to complete outer shell |
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Lewis structure exceptions: |
boron, 3 valence electrons only, 6 after bonding |
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Lewis structure exceptions: |
carbon can have multiple bonds |
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what is resonance |
when more than one correct Lewis structure can be drawn from a molecule |
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VSPER is a acronym for |
Valence, shell, electron, pair, Repultion |
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VSPER theory is used for |
predicting the 3-d shape of molecules that accounts for the compounds physical properties |
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if there is 1 total pairs of e- and 1 bonded pair then the e- pair geometry is |
N/A |
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if there is 1 total pairs of e- and 1 bonded pair then the molecular geometry is |
linear |
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if there is 2 total pairs of e- and 2 bonded pair then the e- pair geometry is |
linear |
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if there is 2 total pairs of e- and 2 bonded pair then the molecular geometry is |
linear |
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if there is 3 total pairs of e- and 3 bonded pair then the e- pair geometry and molecular geometry are |
trigonal planer |
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if there is 4 total pairs of e- and 4 bonded pair then the e- pair geometry is |
tetrahedrum |
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if there is 4 total pairs of e- and bonded pair then the molecular geometry are |
tetrahedrum or trigonal planer |
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if there is 4 total pairs of e- and 2 bonded pair then the e- pair geometry and molecular geometry are |
tetrahedrum and bent v shape |
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if there is 4 total pairs of e- and 1 bonded pair then the e- pair geometry and molecular geometry are |
tetrahedrum and linear |
