Question

The two elements responsible for splitting of $H_{2}O$ to liberate $O_2$ during photosynthesis are

• A. Mn and MO
• B. Ca and Mg
• C. Mn and Cl
• D. Mg and Cl

Answer 1

The correct option is C Mn and Cl

The electrons which are generated from splitting water are later used to split CO2. The general formula is: Water gets oxidized (spends electrons) in this reaction, CO2 in the end is reduced (receives electrons). 4 photons are needed for splitting 1 water molecule and 8 photons to liberate one molecule of oxygen in the present of elements like Mn and Cl and also photosystem is also responsible for the splitting of water.

So, the correct answers are "Mn and Cl".