fill out the chart using the periodic table.
BRAINLIST

Answer:
O = Oxygen
Atomic # = 8
Atomic Mass = 15.999 amu (atomic mass units)
# Of Protons = 8
# Of Neutrons = 8
# Of Electrons = 8
Zn = Zinc
Atomic # = 30
Atomic mass = 65.39 amu
# Of Protons = 30
# Of Neutrons = 35
# Of Electrons = 30
Li = Lithium
Atomic # = 3
Atomic mass = 6.941 amu
# Of Protons = 3
# Of Neutrons = 4
# Of Electrons = 3
I hope this helps!