Term
The s oribtal is _____ shaped
the p oribtal is _____ shaped |
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Definition
1 circle
3'dumbells' that are in the z,y,x |
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Term
1.If the signs (+/-) of the atomic orbitals are the same then ____ forms
2.if the signs are different then ____ forms |
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Definition
1.bonding oribtal
2.antibonding oribtal |
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Term
recall our oribtals:
s,p,d,f
how does a chemical bond form?
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Definition
1. from the overlap of 2 half-filled oribtals
(most common)
2.from the overlap of a :
compleltely filled orbital & an empty orbital.:
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Term
recall our oribtals:
s,p,d,f
why do the orbitals hybridize to form oribtals?
Name the 3 hyberdized orbitals (most commonly delt with) |
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Definition
1. to achieve the lowest energy level possible for that molecule .
(↓energy,↑stable).
(*oribtals are combined,no new orbitals,nothing destroyed)
2 .sp3, sp2,sp |
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Term
sp3 molecules include what kind of bonds __________?
(single,double,triple) |
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Definition
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Term
sp2 molecules include what kind of bonds __________?
(single,double,triple)
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Definition
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Term
1. when the half filled orbitals overlap side to side, (causing 2 parallel electron clould densities),
what special bonds connects them? |
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Definition
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Term
Why is a pi (π )bond needed? |
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Definition
allows the electron density to be above and below the nucleus. |
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Term
when the half filled p orbitals overlap end to end (or head to head) the bond that connects them is called? |
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Definition
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Term
What is an imporant function of sigma bonds(σ)? |
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Definition
allow for free rotation
b/c their electron density of the bonding oribitals accumulate in a single linear
way btwn the nucleus.
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Term
why dont pi bonds allow for free rotations? |
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Definition
the electron densities of these oribitals are parallel
(the pi bond would break if it tried to rotate).
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Term
why are pi bonds weaker than sigma bonds? |
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Definition
Recall that pi bonds connect the unhybridized p oribitals
(recall sp2: 1s 2p, but leaves 1 orbital unhybridized),
=unbridized =higher energy=more unstable |
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Term
sp oribitals are associated with single,double, or triple bonds? |
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Definition
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Term
triple bonds are made of
# pi
#sigma |
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Definition
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Term
double bonds are made of
# pi
#sigma |
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Definition
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