A tube containing a gas of this element was used in an experiment that proved Niels Bohr's energy quantization theory. In add
A tube containing a gas of this element was used in an experiment that proved Niels Bohr's energy quantization theory. In addition to being used in the Franck-Hertz experiment, this element is the cathode in the Castner-Kellnar process. An acetate of this element is bonded onto two carbon atoms in an intermediate step that is followed by the addition of sodium hydride in a reaction that converts alkenes to alcohols. This element usually forms a diatomic molecule when it has an oxidation number of +1, and this element is bonded to sulfur in cinnabar. For 10 points, name this metal that is the only one that is a liquid at room temperature, and which has chemical symbol Hg.
A tube containing a gas of this element was used in an experiment that proved Niels Bohr's energy quantization theory.
Mercury [or Hg until mentioned]