| − | '''Heavy water''', (<sup>2</sup>[[Hydrogen|H]]<sub>2</sub>[[Oxygen|O]], or [[Deuterium|D]]<sub>2</sub>[[Oxygen|O]]) or '''deuterated water''', is [[water]] in which one or both of the [[hydrogen]] atoms in the water molecule is replaced by [[deuterium]]. | + | '''Heavy water''', (chemical formula: <sup>2</sup>[[Hydrogen|H]]<sub>2</sub>[[Oxygen|O]], or [[Deuterium|D]]<sub>2</sub>[[Oxygen|O]]) or '''deuterated water''', is [[water]] in which one or both of the [[hydrogen]] atoms in the water molecule is replaced by [[deuterium]]. |