8. Which of the following fragment ion would show the strongest peak in an EI-MS of 2 -methylpentane?
A)
$[\mathrm{C} 6 \mathrm{H} 14]^{-}$
в) $[$ C5H 511 ]
C) $[\mathrm{C} 4 \mathrm{H} 9]$
D) $\left[\left.\mathrm{C} 3 \mathrm{H}_{7}\right|^{+}\right.$

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Accepted Answer

***C*** ∻Key Concept∻ ⚹Stability of carbocations⚹ ∻Explanation∻ ⚹In electron ionization mass spectrometry, the most stable fragment ion typically shows the strongest peak. The [C4H9]+ ion forms a more stable secondary carbocation compared to the other options, which leads to a stronger signal in the mass spectrum.⚹◊What factors determine which fragment ion exhibits the strongest peak in an electron ionization mass spectrometry analysis of 2-methylpentane?⍭ Generate me a similar question◊

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