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Element Encyclopedia
Just For Fun
Hydrogen
Is the first element on the periodic table, it's colourless and odourless, it is a group 1 element and is very reactive.
Symbol: H
Atomic Mass: 1
Atomic Number: 1
Electronegativity: 2.2
Electrons per shell: 1
Melting Point: -434.5 degrees F (-259.2 degrees C)
Discoverer: Henry Cavendish
- Being a non-metal, Hydrogen has no magnetic properties. It is flammable and reacts with a lighted splint making a squeaky pop sound.
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- It is similar to all other group 1 elements having only 1 valence electron but is different from its other group members as they are all metallic.
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- Hydrogen reacts best with elements from group 7 (the Halogens), which it combines with halogens to form covalent compounds such as HCI, hydrogen chloride, more commonly known as Hydrochloric acid.
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