ELEMENTS

RHODIUM

• Rhodium Symbol is Rh and it's atomic number is 45.
• It has the same number of protons and electrons with 58 neutrons.
• It's solid and it costs about 1,000 per Troy ounce.
• It was discovered in 1803 in England.
• It was discovered by William H. Wollaston

RHODIUM

• It is the rarest of all non-radioactive metals on the earth.
• It is a hard and durable metal with a high reflectance.
• It has a higher melting point and lower density than platinum.
• It is not attacked by acids and is insoluble in nitric acid.
• One of its common uses is Jewelry.

TANTALUM

• It's symbol is Ta.
• It's atomic number is 73.
• It was discovered in 1802
• It was discovered by Anders Ekeberg.
• It's a metal.

TANTALUM

• It is ductile and may be drawn into very fine wire
• It is practically immune to chemical attack at temperatures lower then 150 C.
• Tantalum wire is used as a filament for evaporating other metals.
• Tantalum is immune to body liquids
• It's also a non-irritating metal.

URANIUM

• Every human has about .0001 mg uranium inside their body
• It's used to fuel the powerful "Little Boy" atomic bomb.
• It was discovered in 1789
• It was discovered By Martin Klaproth.
• It was discovered in 1938 that uranium could be split to release energy.

URANIUM

• A chunk of Uranium metal the size of a
• Gallon milk jug weighs over 150 pounds.
• It's symbol is U
• Pure Uranium is Radioactive
• Uranium is about the 50th most abundant element in the Earths crust

SILICON

• Jacob Berzelius is credited with
• Discovering Silicon in 1824.
• It's the 8th most abundant element in the universe by weight
• It's important for the production of steel
• It is a solid at room temperature

SILICON

• It is vital for life in both plants and animals
• Silicon is found in abundance in many animals
• Silicon is the main element in many meteorites.
• Silicon makes up slightly more than 27% of the earths crust
• It is almost never found as a pure element naturally

ZIRCONIUM

• It was discovered in 1789
• It was discovered by Martin Heinrich Klaproth
• In 1914, pure zirconium was produced by Jon Jacob Berzlius
• It's a transition metal with a grayish white color
• There are 28 synthetic zirconium isotopes

ZIRCONIUM

• It's not believed to be a part in living organisms
• It's being tested I'm a new type of cancer detecting pet scans
• It is found in over 140 minerals
• Powdered Zirconium is highly flammable
• There are five naturally occurring isotopes of Zirconium

HYDROGEN

• It's atomic number is 1
• It's extremely light
• It cannot be contained by Earths gravity
• It can become a liquid
• Majority of the Universe's mass is comprised of Hydrogen

HYDROGEN

• Stars burn Hydrogen to produce energy
• So does the Sun
• It is abundant in living matter found in plants and animals
• The gas giant plants are mostly composed Hydrogen
• Hydrogen can be synthetically be made by many different processes.

KrYPTON

• It was discovered by sir William Ramsay
• It was discovered in 1898
• They were studying the residue of boiled liquid water
• Krypton is odorless and colorless
• As many as thirty unstable isotopes have been discovered

KRYPTON

• As a noble gas, the earth has kept all of its original supply of Krypton
• There are six stable isotopes of Krypton that occur in nature
• It's key uses were for photography and lighting
• It is found in the earths atmosphere at one part per million
• Krypton has an atomic number of thirty- Six

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