MCQ
One fermi is $...$
- ✓${10^{ - 13}} \,cm$
- B${10^{ - 15}}\, cm$
- C${10^{ - 10}}\, cm$
- D${10^{ - 12}}\, cm$
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$(R = 8.314 \,J/mol\,K)\,(\ln 7.5 =2.01)$
$\mathop C\limits_6 {H_3} - \mathop C\limits_5 H = \mathop C\limits_4 H - \mathop C\limits_3 {H_2} - \mathop C\limits_2 \equiv \mathop C\limits_1 H$
The state of hybridization of carbons $1, 3$ and $5$ are in the following sequence

The correct order of their acidity is 