Forensic toxicology plays a crucial role in criminal investigations. These skilled professionals scrutinize bodily fluids and tissues to identify the presence of harmful substances. Their expertise can help pinpoint the cause of death, provide insight potential foul play, and ultimately assist law enforcement in bringing to justice complex cases.

Before current methods for element arrangement, scientists struggled to the known elements. One early attempt was made by Johann Wolfgang Döbereiner, a German chemist who recognized a striking pattern among certain groups of compounds. He proposed that three elements with similar properties could be grouped together as these sets, forming the basi