Question

why chemicals should not be stored on a shelf alphabetically​

Answer 1

Answer:

But unfortunately, when it comes to chemicals, materials that are right next to each other alphabetically may be violently incompatible. ... - Segregate acids from materials that can generate toxic or flammable gases on contact (cyanide salts, organic cyanides/nitriles, metal sulfides, thiols, metal carbides, etc.)

Answer 2

Answer:

But unfortunately, when it comes to chemicals, materials that are right next to each other alphabetically may be violently incompatible. ... - Segregate acids from materials that can generate toxic or flammable gases on contact (cyanide salts, organic cyanides/nitriles, metal sulfides, thiols, metal carbides, etc.)