Krypton (Kr)
- Atomic Number: 36
- Atomic Weight: 83.80
- Melting Point: -156.6
- Boiling Point: -152.3
- Specific Gravity: n/a
- Valence(s): 0
Krypton was discovered by Ramsay and Travers in 1898.
Krypton is rare, present in the air in only minute quantities.
Separating Krypton from liquid air is difficult; consequently, the high cost of Krypton limits its uses.
It is used for filling various fluorescent and incandescent lighting devices.
Its name comes from kryptos, which is Greek for hidden.
[LM]
{RW}
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