Model Paper 4 — Chemistry STD 11 Science — Question
Gujarat BoardEnglish MediumSTD 11 ScienceChemistryModel Paper 41 Mark
MCQ
In the ethylene molecule the two carbon atoms have the oxidation number
A
$-1,-2$
B
$-1,-1$
✓
$-2,-2$
D
$+2,-2$
✓
Answer
Correct option: C.
$-2,-2$
(c) $-2,-2$ Explanation: In general carbon molecule have 4 valence electrons and in ethylene molecule $\left( H _2 C = CH _2\right)$ each carbon atom is surrounded by 6 valence electron so by calculating its oxidation number we will get $4-6=-2$. so, thats why carbon have $-2,-2$ oxidation number.
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