A level chem help needed. question about molecular ions??

what does this question even mean? how can a molecule form a molecular ion? only way i can think of is in a TOF spectrometer

(edited 11 months ago)

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Reply 1

bl0bf1sh

Original post by FM1/FP1

what does this question even mean? how can a molecule form a molecular ion? only way i can think of is in a TOF spectrometer

https://www.chemguide.co.uk/analysis/masspecmenu.html
Bombard the molecule with a load of electrons, and there'll be enough energy to knock off an electron from the molecule, thus forming an M+ ion

Spoiler

(edited 11 months ago)

Reply 2

FM1/FP1

Original post by bl0bf1sh

https://www.chemguide.co.uk/analysis/masspecmenu.html
Bombard the molecule with a load of electrons, and there'll be enough energy to knock off an electron from the molecule, thus forming an M+ ion

Spoiler

ohhh i think i get it now, its just about which molecule has a different molecular formula basically then so the answer is c since it has no oxygen. i was getting confused since they all had the same Mr. thanks again blobfish 😁