Answer:
oxygen =8
Explanation:
The atomic number that is located at group 16 and period 2 is the atomic number, 8, which is Oxygen, with an atomic mass of 15.999, or rounded, would be 16.
Hope this helped!
Nate
72.22 g
975 mL Mercury× 13.5 g/mL = 72.22 g
the answer is O²- hopefully
sodium ,Na and magnesium,Mg