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1 2 and 3 please circle final answer for 3 spectrometer 1. Which of the followin

ID: 635934 • Letter: 1

Question

1 2 and 3 please circle final answer for 3

spectrometer 1. Which of the following can not be probed by n HAR a. nueleus with odd number of protons&odd; number b. nucleus with odd number of p c, nucleus with even number of protons& odd rotons seven n umber of neutrons number of neutrons ith even number of protons & even number of neut.rons e, none of these Answer 2. which of the following type of protons are chemically equivalent a. homotopic b. enantiotopic c. diastereotopic e. B& Answer: 3. How many signals woulc you expect in the H NMR spectrum of tne fellowing compound? Answer:

Explanation / Answer

( 1 )

All isotopes that contain an odd number of protons and/or neutrons have an intrinsic nuclear magnetic moment and they will show NMR Spectroscopy .

So , the Nucleus described in option 4 will Not show NMR spectroscopy .

( 2 )

Protons that are enantiotopic or homotopic will have the same chemical shift .

Hence , the correct option is ( D ) .

( 4 )

The above given compound is symmetric , Hence a pair same signals will be produced . The total possible signals in the compound are 5 in which two pairs of signals will be same , So the total Number of Signals that can be produced is 3 signals .