Respuesta :
Answer:
hafnium: atomic number 72
Phosphorus :Atomic number 15
Rhodium :Atomic number 45
Osmium: atomic number = 76
Magnesium: atomic number = 12
Answer:
hafnium: atomic number 72
Phosphorus :Atomic number 15
Rhodium :Atomic number 45
Osmium: atomic number = 76
Magnesium: atomic number = 12