Respuesta :
physics: each of two or more atomic nuclei that have the same atomic number and the same mass number but different energy states.
chemistry: each of two or more compounds with the same formula but a different arrangement of atoms in the molecule and different properties.
chemistry: each of two or more compounds with the same formula but a different arrangement of atoms in the molecule and different properties.
Answer:
compounds with the same chemical formula
compounds with different structures
chemically identical