Select the correct statements regarding the19F NMR spectrum of XeF4129Xe(26.4%, I = 1/2)A.Number of satellite peaksis twoB.Number of satellite peaksis oneC.Intensity of the each satellite peak is 26%D.Total number of peaks observed in the19Fspectrumis threea)A, B and C onlyb)A and D onlyc)B, C and D onlyd)A, C and D onlyCorrect answer is option 'B'. Can you explain this answer?

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Select the correct statements regarding the ¹⁹F NMR spectrum of XeF₄
¹²⁹Xe(26.4%, I = 1/2)
A. Number of satellite peaks is two
B. Number of satellite peaks is one
C. Intensity of the each satellite peak is 26%
D. Total number of peaks observed in the¹⁹F spectrum is three

a)
A, B and C only
b)
A and D only
c)
B, C and D only
d)
A, C and D only

Correct answer is option 'B'. Can you explain this answer?

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Select the correct statements regarding the19F NMR spectrum of XeF4129...

The XeF₄ molecule is pentagonal planar, as shown below:
¹⁹F is 100 % abundant and has I = 1/2.
Xe also has an I = 1/2 nucleus (¹²⁹Xe) that is about 26 % abundant.
All of the other Xe nuclei are I = 0.
All of the ¹⁹F nuclei are chemically equivalent, so a single chemical shift is observed.
For the (100-26.4)% = 73.6% of molecules that contain I = 0 Xe nuclei, this gives rise to a single peak in the ¹⁹F NMR spectrum.
However, for the 23.6 % of ions that contain ¹²⁹Xe, the ¹⁹F nuclei are split by the I = 1/2
The ¹²⁹Xe nucleus splits into two peaks in the¹⁹F NMR spectrum.
The¹⁹F NMR spectrum of [XeF₄ molecule will be as follows:
The spectrum can be interpreted in terms of a singlet (the central line) due to 73.6 % of the ¹⁹F nuclei, plus an overlapping doublet due to the 26.4 % of the ¹⁹F nuclei that couple to ¹²⁹Xe.
Statement D is correct as the total number of peaks observed in the ¹⁹F spectrum is three
The center of the doublet coincides with the position of the singlet because all the¹⁹F nuclei resonate at the same frequency. The two side peaks in the above are called satellite peaks.
Hence, two satellite peaks are observed in the ¹⁹F NMR spectrum.
Statement A is correct and statement B is incorrect as the Number of satellite peaks is two.
Thus, the relative intensities of the spectral peaks are 13.2 %, 76.4 %, and 13.2 %, or 6:1 between the central peak and the two wings.
Statement C is incorrect as the intensities of each satellite peak are 13.2 %
Hence, statements A and D are correct.

Hence, the number of satellite peaks is two, and the total number of peaks observed in the 19F NMR spectrum is 3.
Thus, statements A and D are correct.

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Select the correct statements regarding the19F NMR spectrum of XeF4129...

Explanation:

Number of Satellite Peaks:
- XeF4 has one 19F nucleus with I = 1/2, which results in two satellite peaks in the 19F NMR spectrum.

Intensity of Each Satellite Peak:
- The intensity of each satellite peak in the 19F NMR spectrum of XeF4 is generally 26%.

Total Number of Peaks Observed:
- In the 19F NMR spectrum of XeF4, the total number of peaks observed is three: one central peak and two satellite peaks.

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Select the correct statements regarding the19F NMR spectrum of XeF4129Xe(26.4%, I = 1/2)A.Number of satellite peaksis twoB.Number of satellite peaksis oneC.Intensity of the each satellite peak is 26%D.Total number of peaks observed in the19Fspectrumis threea)A, B and C onlyb)A and D onlyc)B, C and D onlyd)A, C and D onlyCorrect answer is option 'B'. Can you explain this answer?

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