Quantum chemical calculations (Natural Resonance Theory) give a 1.7% weighting to the resonance form of the Lewis structure of phosphate ion shown below. How many additional, equivalent resonance forms (i.e, each with a 1.7% weighting) are there? Hint: consider that the other singly bonded oxygens could have double bonds in the other resonance forms, and the ionic, nonbonded oxygen could be the other axygens in the other resonance forms. Which of the following is a correct depiction of the net dipole (as an organic chemist would draw it) for an ammonia molecule? H. H. H. H. H VH I II III IV What is the name of the molecule shown below in the Newman projection? H. Ch CH2CH3 H Br O (R)-1-bromo-2-chlorobutane O (R)-2-bromo-1-chlorobutane O (1R,25)-2-bromo-1-chlorobutane O (1R,25)-1-bromo-2-chlorobutane O (15,2R)-2-bromo-1-chlorobutane O (15,2R)-1-bromo-2-chlorobutane O (S)-2-bromo-1-chlorobutane O (S)-1-bromo-2-chlorobutane O oo o oo O

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Quantum chemical calculations (Natural Resonance Theory) give a 1.7% weighting to the resonance form of the Lewis structure of phosphate ion shown below. How many additional, equivalent resonance
forms (i.e, each with a 1.7% weighting) are there? Hint: consider that the other singly bonded oxygens could have double bonds in the other resonance forms, and the ionic, nonbonded oxygen could be the
other axygens in the other resonance forms.
3-
Which of the following is a correct depiction of the net dipole (as an organic chemist would draw it) for an ammonia molecule?
H.
H
H
H.
H
VH
I
II
III
IV
What is the name of the molecule shown below in the Newman projection?
CH2CH3
H
Br
O (R)-1-bromo-2-chlorobutane
O (R)-2-bromo-1-chlorobutane
O (1R.25)-2-bromo-1-chlorobutane
O (1R,25)-1-bromo-2-chlorobutane
O (15,2R)-2-bromo-1-chlorobutane
O (15,2R)-1-bromo-2-chlorobutane
O (S)-2-bromo-1-chlorobutane
O (S)-1-bromo-2-chlorobutane
Transcribed Image Text:Quantum chemical calculations (Natural Resonance Theory) give a 1.7% weighting to the resonance form of the Lewis structure of phosphate ion shown below. How many additional, equivalent resonance forms (i.e, each with a 1.7% weighting) are there? Hint: consider that the other singly bonded oxygens could have double bonds in the other resonance forms, and the ionic, nonbonded oxygen could be the other axygens in the other resonance forms. 3- Which of the following is a correct depiction of the net dipole (as an organic chemist would draw it) for an ammonia molecule? H. H H H. H VH I II III IV What is the name of the molecule shown below in the Newman projection? CH2CH3 H Br O (R)-1-bromo-2-chlorobutane O (R)-2-bromo-1-chlorobutane O (1R.25)-2-bromo-1-chlorobutane O (1R,25)-1-bromo-2-chlorobutane O (15,2R)-2-bromo-1-chlorobutane O (15,2R)-1-bromo-2-chlorobutane O (S)-2-bromo-1-chlorobutane O (S)-1-bromo-2-chlorobutane
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