What are some positive ways arsenic is used?
Applications in electronics and some engineering sectors.
Arsenic is a metalloid, so it has properties that are roughly speaking midway between those of metals, and those of non-metals. This means that it can be blended with metals to modify their properties and especially those of alloys. One application of this is the strengthening of copper and lead alloys such as those used for the electrodes in car batteries. It is also used the production of N-type semiconductors, where it functions as a doping medium.