THORIUM

THORIUM

• Atomic number: 90
• Atomic mass: 232.04
• Metal
• Conducts thermal
• Solid metal at state of matter at room temperature

THORIUM (CONT.)

• Silvery, often with black tarnish
• Slowly attacked in water
• Extremely flammable: will ignite itself if exposed to air
• Thorium is found in the form of the oxide thorite, ThO2
• Group: Actinides

THORIUM (CONT.)

• One pound of thoruim equals the energy potential
• of about three million pounds of coal.
• Thorium is about four times more abundant than uranium.
• It is also more abundant in the earth's crust than gold, silver, mercury
• tungsten and tin.

PHOSPHORUS

PHOSPHORUS

• Atomic number: 15
• Atomic mass: 30.97
• It is a nonmetal
• It is nonconductive
• It is solid at room temp

PHOSPHORUS (CONT.)

• It comes in two different forms yellow and red, it is powdery
• It reacts in water
• It is flammable
• Phosphorus was the first element discovered that had not
• been in use by civilizations for hundreds of years.

TEIIURIUM

TEIIURIUM

• Atomic nubmer: 52
• Atomic mass: 127.60
• Metalloid
• Conductive abillity: thermal
• State of matter at room temp: solid

TEIIURIUM (CONT.)

• Silvery lustrous gray
• Not reactive in water
• It is flammable
• Found in the earths crust, native form, as element ovystais
• Group 16 (chalcogens)

TEIIURIUM (CONT.)

• Named after the latin word "teiius" which means earth

SODIUM

SODIUM

• Atomic number: 11
• Atomic mass: 23.0
• Metal
• Conductive abillity: electricity
• State of matter at room temp: solid

SODIUM (CONT.)

• Silvery with metallic
• Very reactive in water
• Very flammable
• It is not found in nature
• Group 1(alkail metal)

SODIUM (CONT.)

• Sodium's chemical symbol: NA, stands for natrium
• from a town in west virgina.