What is the longest wavelength of radiation with enough energy to break carbon-carbon bonds?

The longest wavelength of radiation used to break carbon-carbon bonds is 344 nm.

Explanation:

The longest wavelength of radiation can also be stated as the minimum radiation frequency required to cut carbon-carbon bond should be equal to the threshold energy of the carbon-carbon bonds.

The threshold energy will be equal to the binding energy of the carbon-carbon bonds. As it is known that carbon-carbon bonds exhibit a binding energy of 348 kJ/mole, the threshold energy to break it, is determined as followed.

First, we have to convert the energy from kJ/mol to J, i.e., energy for the carbon-carbon molecules,

As,

So,

Thus, is the longest wavelength of radiation used to break carbon-carbon bonds.

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