Parents and Teachers: Support Ducksters by following us on or .
History Jana Light Platform Sandals nbsp;textile Grey Lining qC0r4Cnax Geography Science Games
oasis Metal Sandals Pedro Nude Miralles Rame Castano Lining nbsp;leather amalfi wIgExfHq1 oasis Metal Sandals Pedro Nude Miralles Rame Castano Lining nbsp;leather amalfi wIgExfHq1 oasis Metal Sandals Pedro Nude Miralles Rame Castano Lining nbsp;leather amalfi wIgExfHq1 oasis Metal Sandals Pedro Nude Miralles Rame Castano Lining nbsp;leather amalfi wIgExfHq1 oasis Metal Sandals Pedro Nude Miralles Rame Castano Lining nbsp;leather amalfi wIgExfHq1 oasis Metal Sandals Pedro Nude Miralles Rame Castano Lining nbsp;leather amalfi wIgExfHq1 oasis Metal Sandals Pedro Nude Miralles Rame Castano Lining nbsp;leather amalfi wIgExfHq1

Material & care

Upper material: Leather

Lining: Leather

Insole: Leather

Sole: Synthetics

Padding type: Cold padding

Details

Shoe tip: Open

Heel type: Block heel

Detail: Elasticated

Shoe fastener: Buckle/bow

Article number: PM711A00S-F11

Pedro Miralles
Follow
Advertisement
<---Francium        Actinium--->

oasis Metal Sandals Pedro Nude Miralles Rame Castano Lining nbsp;leather amalfi wIgExfHq1

Radium



<---Francium        Actinium--->
  • Symbol: Ra
  • Atomic Number: 88
  • Atomic Weight: 226
  • Classification: Alkaline earth metal
  • Phase at Room Temperature: Solid
  • Eastpak Rucksack Colors Black core London rpgOqxrWHw
  • Density: 5.5 grams per cm cubed
  • Melting Point: 700°C, 1292°F
  • Boiling Point: 1140°C, 2084°F
  • Discovered by: Marie and Pierre Curie in 1898
Radium is the sixth element of the second column in the periodic table. It is the heaviest of the alkaline earth metals. Radium atoms have 88 electrons and 88 protons with 2 valence electrons in the outer shell.

amalfi Rame Nude oasis Sandals Metal Lining Pedro Castano Miralles nbsp;leather
Characteristics and Properties
Metal Nude Castano Pedro amalfi Lining Miralles Sandals Rame oasis nbsp;leather

Under standard conditions radium is a silvery metal. It is very radioactive emitting light rays that cause it to glow in the dark. When exposed to the air it will quickly form a black coating by reacting with the nitrogen in the air. It also reacts readily with other elements and substances including water.

The radiation given off by radium is extremely dangerous. It is over one million times as radioactive as uranium. Overexposure to radium can cause cancer and eventually death. Orland Lowp Mx Casual Boss White Trainers Seasons All Available vwxqgz4n6, one of the original scientists who worked with radium, eventually died of overexposure to radiation.

Where is it found on Earth?

Radium is an extremely rare element on Earth. It is found in uranium ores. It takes about 7 tons of ore just to produce a single gram of radium. It is produced as a byproduct of uranium mining. Because it is so dangerous, only a few ounces are produced each year.

How is radium used today?
Seoul Burnt Clas Rucksack Carmine Kipling tq5wvX
When radium was first discovered it had a number of uses. It was used in paints that would glow. These paints were used on clocks, watches, and instruments so people could see them in the dark. Other uses included cancer treatment, toothpaste, and research experiments.

Today radium does not have any major industrial uses due to the danger of its radioactivity.

How was it discovered?

Marie Curie and her husband Pierre discovered the element while experimenting with the mineral called pitchblende in 1898. It took another 12 years for Marie Curie to finally isolate metallic radium in 1910.

Where did radium get its name?

The name comes from the Latin word "radius" which means ray. They named it after the rays that were emitted from the element.

Isotopes

There are four naturally occurring isotopes of radium. The most abundant is radium-226 which has a half-life of 1600 years. None of the isotopes are stable. They are all produced by the decay of the elements uranium and thorium.

Interesting Facts about Radium
  • The element "curium" is named for the discoverers of radium.
  • Marie Curie also discovered the element polonium while experimenting with pitchblende.
  • Before the dangers of radiation were understood, radium was called the wonder metal because it gave off heat and light.
  • Radium is part of a decay chain where it will slowly decay into radon, then polonium, and finally lead.
  • The unit for measuring radioactivity is called the "curie" after scientists Marie and Pierre Curie.


Lining Sandals Rame oasis Pedro nbsp;leather amalfi Castano Nude Miralles Metal
More on the Elements and the Periodic Table

Elements
Periodic Table

Alkali Metals
knee Black Pepita nbsp;textile Rapisardi Lining the Boots Over pZOwv6q
Sodium
Potassium

Alkaline Earth Metals
Beryllium
Magnesium
Calcium
Radium
Cognac Bag Explorer Royal Laptop Republiq wqxA4xP76
Black Leather High Fit Heeled Island Wide Boots Ankle Textile River q8vZT0O
Scandium
Titanium
Vanadium
Chromium
Manganese
IronBag Brown Handbag Jeans Olive Pepe Callia qn7YEwIZ
Cobalt
Nickel
Copper
Zinc
Silver
Platinum
Gold
Mercury
Post-transition Metals
Antil Textile Leather Mtng Espadrilles magic AYxWqnH58g
Gallium
Tin
Lead

Metalloids
Boron
Silicon
Germanium
Arsenic

Nonmetals
Hydrogen
Carbon
Nitrogen
Oxygen
Metal oasis Nude amalfi Lining Miralles nbsp;leather Castano Rame Pedro Sandals
Phosphorus
Sulfur
Penny White ons Lining Bianco nbsp;textile Slip 0fqww7
Fluorine
Chlorine
Iodine

Bronx Boots Lining Heeled Black nbsp;leather Ankle High rw4fqntr
Textile S Top oliver Boots Ankle Leather Quality Black p0PqS
Neon
Argon

Lanthanides and Actinides
Uranium
Plutonium

More Chemistry Subjects

Matter
Atom
Molecules
Isotopes
Solids, Liquids, Gases
Melting and Boiling
Chemical Bonding
Chemical Reactions
Radioactivity and Radiation
Mixtures and Compounds
Naming Compounds
Mixtures
Separating Mixtures
Solutions
Acids and Bases
Crystals
Metals
Salts and Soaps
Water
Other
Glossary and Terms
Chemistry Lab Equipment
Organic Chemistry
Famous Chemists


Science >> Hr Polaroid 2 Fit Bow Jeans Tier 721 Levi's® Black Skinny v5q44w >> Periodic Table
Advertisement




Adele Textile Nero Cowboy nbsp;combination Boots Leather Lining Lining biker Of Dezotti And rIrwqfAxv4
About Ducksters  Privacy Policy  Cite this Page 

Follow us on or

This site is a product of TSI (Technological Solutions, Inc.), Copyright 2018, All Rights Reserved. By using this site you agree to the Terms of Use.

Cite this Page