Two elements detected on the hands of an individual who has recently fired a weapon are:

Question

Quizplus · Accepted Answer

Antimony and barium are commonly found on the hands of someone who has recently fired a weapon. These elements are present in the primer of gun cartridges and are released during firing. Other elements like zinc and copper (A) could also be present due to the composition of the cartridge casing or gun itself, but they are not specific to firing a weapon. Barium and nitrates (C) could be present in fireworks or explosives but not necessarily in firearms. Antimony and iron (D) could be present in different contexts but are not commonly associated with firing a weapon.

Two Elements Detected on the Hands of an Individual Who