Respuesta :

The symbol of magnesium is mg and iron is Ir

Answer:

Mg - Magnesium

Fe - Iron

Explanation:

Magnesium - It is "Mg" because in the periodic table its atomic number is 12 , and atomic mass is 24.305 u .

Iron - It is "Fe" because in the periodic table its atomic number is 26 , and atomic mass is 55.845 u .