Final answer:
Cannot determine the value of h(2) as the necessary information or function definition for h(x) is not provided.
Step-by-step explanation:
The value of h(2) is not directly provided in the text snippets, and there seems to be some confusion as the provided information relates to different subjects such as chemistry (oxidation numbers) and physics (electric currents). Consequently, without the proper context or a specific function h(x), it is not possible to determine the value of h(2) accurately. To solve for h(2), we would need the explicit function h(x) defined, or additional information regarding the relationship that includes h.