When we are performing IR spectroscopy for Cyclohexane and cyclohexene, we can distinguish them as cyclohexene has C-H carbon-hydrogen stretching so, it shows the absorption at 3000-2850 cm⁻¹ range, where the cyclohexane do not have this and it shows the -C=C- stretch at 1640-1680 cm⁻¹ range in the spectrum. So that is how we can distinguish both.
The answer is True
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Sodium is an electron lender since it only needs to get rid of one electron to have a completed valence electron shell and therefore has a low electronegativity.
I hope this helps. let me know if anything is unclear.
