Sire_Waistle
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#1
Report Thread starter 6 days ago
#1
I was just wondering is it possible for a atom to be subject to fragmentation in a mass spectrometer by an electron gun? Or is this just for large molecules. I've tried searching it up but most results don't say anything so I'm assuming I am wrong

Its for this question (2 marks) :
Sometimes in the mass spectrum of Kr has a very small peak with an m/z value of 42.
Explain the occurrence of this peak.
Last edited by Sire_Waistle; 6 days ago
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Neonpipette
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#2
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An atom is vaporised in a mass spectrometer before it is ionised in the ionisation chamber by being hit by high energy electrons from an electron gun. It gets ‘ionised’. So yeah here it will split into ions of different charges otherwise known as fragments and give m/z peaks.
As for that Kr peak Idk rlly how to explain but I hope this answered the first question I asked.
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scimus63
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probably due to a small number of atoms with a +2 charge, since mass spectra record m/z ratios, if ion has a +2 charge then masses will appear halved!
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Sire_Waistle
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#4
Report Thread starter 4 days ago
#4
(Original post by scimus63)
probably due to a small number of atoms with a +2 charge, since mass spectra record m/z ratios, if ion has a +2 charge then masses will appear halved!
Ahh I get it now thanks, I got confused by my teacher haha
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