Radium

Located in Period 7 and Group 2 of the Periodic Table is one of the elements needed to do Glow Sticks. It is called Radium.

First discovered by Henry Becquerel in 1898, isolated by the Curies in 1902 from an ore called Pitchblende (Cleveite).

They actually first isolated Polonium from Pitchblende. However, the Curies thought that it's not enough. So, they continued to research and continue to isolate element.

Until 1902, the Curies finally isolated a new element which after they called it Radium.

Atomic Number : 88
Name : Radium
Latin Name : Radium
Electrons per shell : [ 2, 8, 18, 32, 18, 8, 2 ]

Discoverer : Henry Becquerel ( 1898 )

Isolator : Marie Curie and Pierre Curie ( 1902 )

Element's : Atomic Mass : 226u 

                  : Density : 5.5g/cm3

                  : Type : Alkali Earth Metal

Chemical Properties :

• Reacts with Water to form Radium Hydroxide.
• Very very reactive
• Very very radioactive
• 48 isotopes, some of it are : 223Ra ,224Ra ,225Ra ,226Ra ,228Ra
• 223Ra : Protons : 88 : Neutrons : 135 : Electrons : 88 ( Half life of 11.4 days )
• 224Ra : Protons : 88 : Neutrons : 136 : Electrons : 88 ( Half life of 3.6319 days)
• 225Ra : Protons : 88 : Neutrons : 137 : Electrons : 88 ( Half life of 14.9 days )
• 226Ra : Protons : 88 : Neutrons : 138 : Electrons : 88 ( Half life of 1600 years )



Radium 226, naturally occurring isotope

• 228Ra : Protons : 88 : Neutrons : 140 : Protons : 88 ( Half life of 5.75 years )

𝞪 = ALPHA DECAY ; β = BETA DECAY ; Γ = GAMMA DECAY

Physical Properties : 

• White in color
• Melting Point : 700 degrees Celsius
• Boiling Point : 1737 degrees Celsius
• Radioactive

Radioactive sign

Uses

Radium was once used in cosmetics, watches and even foods! But after workers at the Watch Factory complained about their Jaw's problem, Radium was found to be doing the disease and eventually Radium was banned in 1920.

However, Radium was now still used in clothes, phone cases, glow-in-the-dark paint and also Glow Sticks.

So, Radium is still Radioactive. If you ever recieve a glow stick, do not break it or radioactive substances will escape!

Glow Sticks

THIS IS THE END OF RADIUM
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