manganese The metal that is used as a sacrificial electrode to prevent the rusting of iron is manganese.
The correct answer to this question is the unique atomic number which would be B
The answer is d I'm pretty sure because the second one and the first one don't make sense but I'm not 100 percent positive about it not being d ..... sorry if it's wrong.
<span>Gallium-72 that is what i got when i did the math for it</span>
