Some proteins within a cell can be viewed with

Some proteins within a cell can be viewed with the "Electron microscope".

Explanation:

An electron microscope is a laboratory microscope with a singular beam that uses electrons to refract the surface of objects and picture an image. They can improve the reach of light photons. So, they mean a really big improvement. They are used to study molecules, microorganisms, crystals and more tiny objects. Thus, that is why electron microscopes can reach proteins inside the cells.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.