Which of the following is not a factor contributing to the large free energy of hydrolysis of atp?
a. better stability of products than atp itself.
b. better solvation of products than atp itself.
c. electrostatic repulsion of oxygen atoms.
d. complexes with mg2+ or mn2+ ions.

Complexes with Mg⁺² or Mn⁺² ions.

Explanation:

There is no relation of Mg⁺² or Mn⁺² ions and the energy of ATP.

ATP stands for Adenosine triphosphate thus it has three phosphate bonds.

When it is hydrolyzed it gives ADP and inorganic phosphate, which has two phosphate bonds.

The inorganic phosphate groups (orthophosphate) are stabilized due to resonance. Thus the products are more stable.

In case of ATP there is high electrostatic repulsion also in oxygen atoms.

The orthophosphate and ADP formed are more stable due to better solvation also.