The Three Heaviest/Densest Elements in the Periodic Table

Osmium

• the Symbol is Os
• atomic Number is 76
• average Atomic Mass is 190.23
• origin of the Name is osme comeing from Greek

Alchemist-hp, CC BY-SA 4.0

A gray-white metal, osmium is very hard, brittle, and difficult to work, even at high temperatures.Pure osmium metal does not occur in nature.The English chemist Smithson Tennant discovered the element together with iridium in the residues of platinum ores not soluble in aqua regia

Three cool facts about this element

1. it is the densest element in the periodic table
2. the boiling point is over 9,000
3. melting point is over 5,400

hassium

• the Symbol of hassium is hs
• atomic Number is 108
• the Origin of Name Hassia
• average Atomic Mass 278 u

Ravenpuff, CC BY-SA 4.0

The hassium was found in 1984 by researchers Peter Armbruster and Gottfried Münzenber in Darmstadt, Germany.

Three cool facts about this element

1. highly radioactive
2. It is 41 g/cm3 heaviest element
3. melting point 1,719.3°F

Meitnerium

• the Symbol of Meitnerium is Mt
• atomic Number is 109
• average Atomic Mass is 278
• origin of the Name is named after the Austrian physicist Lise Meitner

Albedo-ukrCC BY-SA 2.5

it is artificially produced element.

Three cool facts about this element

1. Meitnerium has seven isotopes
2. it is highly radioactive metal
3. fewer than 10 atoms of meitnerium have ever been made

websites

• https://www.britannica.com/science/hassium
• https://www.britannica.com/science/osmium
• https://www.britannica.com/science/meitnerium