<span>The element Arsenic, or As in the periodic table, possesses the valence electron configuration of 4s2 4p3. It has an atomic number of 33 and an atomic mass of 74.92, and is classified as a metalloid.</span>
Answer:
A variable is anything that can change or be changed. In other words, it is any factor that can be manipulated, controlled for, or measured in an experiment.