What happens when you change the number of protons keeping the numbers of other particles the same?

See explanation

Explanation:

The atomic number refers to the number of protons in the nucleus of an atom. We identify an element by its atomic number.

When the atomic number of an atom of an element is changed, we have changed the identity of that atom and transformed it into an atom of a different element.

For example, if we add a proton to a sodium atom, we create a magnesium atom. If we remove a proton from a sodium atom, we create a neon atom.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.