Question

what is the element of o2
​

Answer 1

Answer:

OXYGEN is your answer

hope it helps you

Answer 2

Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds.

•Symbol: O

•Atomic mass: 15.999 u

•Atomic number: 8

•Electron configuration: [He] 2s²2p⁴

•Electronegativity: 3.44

•Charges:

-2The two gained electrons (purple dots) means that this oxygen ion has 10 electrons (-10 charge) and only 8 protons (+8 charge), giving the ion a net charge of -2. Symbolically, we can represent this oxygen ion as O-2.

•Protons neutrons electrons:

Atomic Mass:15.999 atomic mass units

Number of Protons:8

Number of Neutrons:8

Number of Electrons:8

•Density:

1.429 g/L

Melting point (O2) 54.36 K (−218.79 °C, −361.82 °F)

Boiling point (O2) 90.188 K (−182.962 °C, −297.332 °F)

Density (at STP) 1.429 g/L

•Valence electrons

six

Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell. We can write the configuration of oxygen's valence electrons as 2s²2p⁴.