Forensic toxicology represents a crucial role in criminal investigations. These skilled professionals scrutinize bodily fluids and tissues to uncover the presence of harmful substances. Their expertise may help determine the cause of death, shed light potential foul play, and ultimately aid law enforcement in bringing to justice complex cases. A f

Before modern classification systems, scientists attempted to organize the known elements. One early attempt was made by Johann Wolfgang Döbereiner, a German chemist who observed a striking pattern among certain groups of chemicals. He proposed that three elements with similar traits could be grouped together as these sets, forming the basis for h