We know that heating happens due to mid-infrared region of solar irradiation.
Ice melts due to absorption of which specific range of wavelengths of electromagnetic spectrum?
Can we relate this to the vibration states of hydrogen bonds inside ice crystals and due to water molecules?
And is all the energy absorbed in UV, Infrared and Microwave region used for heating the ice mass or could it be used for breaking OH bond and just lead to ionisation?
Reference: https://en.wikipedia.org/wiki/Electromagnetic_absorption_by_water
For melting of ice only sufficient heat is required. Water molecule (H2O) can absorb infrared spectrum of radiation that is converted to heat will help in melting the ice. Even the small absorption of other part of the spectrum will also be converted to heat by non radiative transition that can also help in melting of ice.
The absorption spectrum of water(H2O) is in UV , Red and Infrared region of EM spectrum which cater to initiate Intra molecular(within molecule) vibration modes (http://www1.lsbu.ac.uk/water/water_vibrational_spectrum.html#snow)
You can use, for example, measurements of spectral albedo from Perovich et al. (2002) for sea ice: Article The seasonal evolution of Arctic sea ice albedo
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