Elementary, my dears. Part 2.

• Hafnium. 1923. From Latin word for Copenhagen.
• Hassium. 1984. Latin word for the German state of Hesse.
• Helium. 1894. Named for Helios, Greek sun god.
• Holmium. 1878. Named for Stockholm.
• Hydrogen. 1766. "Water creator" in Greek.
• Indium. 1863. Named for indigo line in its light spectrum, which is how scientists discovered it.
• Iodine. 1811. Greek for "purple" because of its vapor.
• Iridium. 1803. Named for Iris, Greek goddess of the rainbow, because iridium salts are brightly colored.
• Iron. Used since at least 3500 BC. From ancient Germanic word for "Holy Metal."
• Krypton. 1898. Greek for "the hidden one."
• Lanthanum. 1839. Greek "to lie hidden."
• Lawrencium. 1961. Named for the Lawrence Berkeley Lab at which it was discovered.
• Lead. 6400 BC. From Frisian word for "weight." Its symbol is Pb, from its Latin name, "plumbum." Roman pipes were made of lead, and this is where our words "plumbing" and "plumber" come from.
• Lithium. 1821. Greek for stone.
• Lutetium. 1907. Latin word for Paris.
• Magnesium. 1808. Found in a region in Thessaly called Magnesia.
• Manganese. 1774. Also named for Magnesia.
• Meitnerium. 1982. Named for Austrian physicist Lise Meitner.
• Mendelevium. 1955. Named for Dmitri Mendeleev, creator of the periodic table.
• Mercury. 1500 BC. Named for Roman god Mercury because it's so quick. Its symbol is Hg, from the Greek phrase for "silver water."
• Molybdenum. 1778. From Greek word for lead.
• Neodymium. 1885. Greek for "new twin."
• Neon. 1898. Greek for "new one."
• Neptunium. 1940. Named for planet.

 That's it for tonight, but I thought it was pretty interesting. Part 3 of 3 tomorrow!