1777
Because Louis Nicolas Vaquelin discover chromium or Cr.
Louis vauquelin
Chromium was discoverd by Nicolas-Louis Vauquelin in 1797.
he was bored
Chromium was discovered in 1797 by the French chemist Nicholas Louis Vauquelin.
Chromium was discovered by Nicholas Louis Vauquelin in 1797.
Louis Nicolas Vauquelin first isolated metalic chromium in 1798.
Nicolas-Louis Vauquelin was born in Kingdom of France.
Louis Nicolas Vauquelin was born on May 16, 1763.
Louis Nicolas Vauquelin was born on May 16, 1763.
As to how chromium was discovered, that may be lost in history. Some of the tips of bronze spears of the Terra cotta Army, ~300 BCE, show no corrosion, and have been found to be coated with a chromium compound. That has to be a long-lasting coating! Chromium is so named because many of its compounds are brightly coloured. Chroma = colour in Greek. Some chromium salts are quite toxic, and are part of the story line of the film Erin Brokovich. This concerns the hexavalent form. In modern times, it was first identified by Voiquelin around 1797. Probably in the analysis of a bright red lead chromate.
Louis Nicolas Vauquelin died on November 14, 1829 at the age of 66.