Explanation:

During the process of ionization of water (H2O), one hydrogen atom (H) is captured by NADP (Nicotinamide adenine dinucleotide phosphate), which is an important molecule involved in various metabolic processes in living organisms.

Ionization of Water:
Water (H2O) is a polar molecule, which means it has a slightly positive charge on the hydrogen atoms and a slightly negative charge on the oxygen atom. In the presence of an external force, such as light energy, water molecules can undergo ionization or dissociation.

The ionization of water can be represented by the following equation:
H2O -> H+ + OH-

In this reaction, one hydrogen atom (H) is released as a positively charged ion (H+ or a proton), and the remaining hydroxyl group (OH-) is released as a negatively charged ion.

Role of NADP:
NADP is a coenzyme that plays a crucial role in various metabolic processes, particularly in photosynthesis. It acts as an electron carrier, accepting and donating electrons during redox reactions.

During the process of photosynthesis, NADP acts as an electron acceptor during the light-dependent reactions. It accepts high-energy electrons from chlorophyll and becomes reduced to NADPH. This NADPH molecule carries the energized electrons to the Calvin cycle, where it acts as a reducing agent in the synthesis of glucose.

In the context of the given question, NADP captures the released hydrogen ion (H+) during the ionization of water. This capture of the hydrogen ion by NADP is an essential step in the conversion of light energy into chemical energy during photosynthesis.

Therefore, during the ionization of water, H is captured by NADP.

Conclusion:
In summary, during the ionization of water, one hydrogen atom (H) is captured by NADP, which is an important molecule involved in various metabolic processes, especially in photosynthesis.