What are the allowed nuclear spin states for the following atoms? (a) 14N (b) 13C (c) 17O (d) 19F
2. Calculate the chemical shift in parts per millionfor a proton that has resonance 128 Hz downfield from TMS on a spectrometer that operates at 60 MHz.
3. A proton has resonance 90 Hz downfield from TMS when the field strength is 1.41 Tesla (14,100 Gauss) and the oscillator frequency is 60 MHz. (a) What will be its shift in Hertz if the field strength is increased to 2.82 Tesla and the oscillator frequency to 120 MHz? (b) What will be its chemical shift in parts per million