Answer:
2, 6
Image result for number of electrons O
Atomic number: 8
Atomic mass: 15.999 u
Electron configuration: [He] 2s²2p⁴
Explanation:
#8 - Oxygen - O
Symbol, O. Atomic Number, 8. Atomic Mass, 15.999 atomic mass units. Number of Protons, 8. Number of Neutrons, 8. Number of Electrons, 8. Melting Point, -218.4° ...
Atomic Mass: 15.999 atomic mass units
Cost: $.30 per 100 grams
Period: 2
Normal Phase: Gas
