Question #a2b1e

1 Answer
hsk
Feb 6, 2018

#H_2O#, a water molecule.

Explanation:

#O_2# is released during the light cycle of the photosynthesis. Below is a figure where you can observe that once the light photon hits the photosystem II, the energy is transferred to the water splitting complex where using a cluster of 4 Mn ions and 1 Calcium ion.

Together with four oxidizing elements 4 water molecules are oxidized to #O_2#. there are at current, 5 intermediate states #S_02# #to# #S_04#known which are involved in splitting of #O_2#

http://symposium.cshlp.org/content/77/295.full

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