Respuesta :

Using the periodic table, complete the following.

Element: oxygen

symbol: 02

Molecular weight: 32g

Mass of one mole: 32g

g/mol

Explanation:

Oxygen

  • It is placed in group 16 and period 2 rd .
  • Its atomic number is = 8
  • No. of protons = 8
  • No. of electrons =8
  • Electronic configuration=2,6
  • Valence shell =  L
  • Valence electron = 6
  • valency =-2
  • Its isotopes are O-16,O-17,O-18
  • It exist as diatomic gas (O₂)
  • Its atomic mass is =16g
  • Its molecular mass = 16 x 2 =32g
  • It is supporter of combustion .
  • It is necessary for survival .

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