In: Chemistry
1- On a mass spectrum, the molecular ion has an m/z = 58. What is the name of the peak at m/z = 59?
Answer: b. M+1
Molecular ion is at m/z 58 , the M+1 will be at 58+1=59 only.
2 - Assume a molecule has an even value of m/z for its molecular ion. Choose all of the possible numbers of nitrogens this molecule may contain.
Answer: a.2, c.4 and d.0 (3 answers are correct)
This rule is called as "Nitrogen Rule", according to which The Nitrogen Rule states that if m/z for M is odd, then the molecular formula must have an odd number of nitrogens. If m/z for M is even, then the molecular formula must have an even number of nitrogens (this includes 0).
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