When Identifying the Molecular Ion Peak, ,All of the Following

question 4

Multiple Choice

When identifying the molecular ion peak, ,all of the following must be kept in mind,except:

• A) Will be the highest m/z value of any of the "significant" peaks in the spectrum that can not be attributed to isotopes or background.
• B)intensities of isotopic peaks M+1,M+2 and so forth must be consistent with the proposed formula.
• C) Will be at least 70% of the base peak.
• D)the peak for the heaviest fragment ion should not correspond to an improbable mass loss from )
• E)if a fragment ion is known to contain X atoms of element Z,then there must be at least X atoms of element Z in the molecular ion.

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