What color is Cyclopentadienyl nickel nitrosyl?
Oxygen Oxygen is a chemical element with symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless and odorless diatomic gas with the formula O2 . Diatomic oxygen gas constitutes 20.8% of the Earth's atmosphere. As compounds including oxides, the element makes up almost half of the Earth's crust.
Nickel(II) acetate Nickel(II) acetate is the name for chemical compound with the formula Ni(CHCO)·2 HO or Ni(CHCOO)·2 HO also abbreviated Ni(OAc)·2 HO. The green tetrahydrate Ni(CHCOO)·4 HO is more common. It is used for electroplating.