Question

choose an item that is not having a spin quantum number 1 / 2
a) C13 b)N15. c)F19. d)O16​

Answer 1

Answer:

D) 016 is correct answer

Answer 2

Magnetic and non magnetic nuclei

Explanation:

• We can the categized given items on the basis of magnetic and non magnetic nuclei.
• Magnetic nuclei are those nuclei which are active and participate in giving number of lines in the NMR spectrum.
• Non magnetic nuclei are those inactive nuclei which do not participate in giving signals in the NMR spectrum.
• Magnetic nuclei have spin quantum number value not equal to zero and whose atomic mass cannot be divisible by 4.
• Non magnetic nuclei are those which spin quantum number value equal to zero and whose atomic mass can be divisible by 4.
• ¹³C, ¹⁵N, ¹⁹F are NMR active nuclei and hence have spin quantum number value equal to 1/2.
• Whereas ¹⁶O is NMR inactive nuclei and have spin quantum number value equal to 1/2.