[Dolphinsiu]

Parent peak, given by parent ion, P, refers to the peak having highest intensity due to highest abundance of isotope in the fragment ion or molecular ion. Isotope peaks, given by isotope ions, P+1, P+2,…etc, are the peaks having their intensity corresponding to relative abundance of isotopes excluding the parent ion.

Simply speaking, molecular ion peak is parent peak, but parent peak is not necessarily molecular ion peak.

Are the concept of the above statement correct? Thanks

[o0CY0o]

Correct
Cheers.

[Dolphinsiu]

thanks for your response