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Krypton (Kr)??

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Basic Information
Name: Krypton
Symbol: Kr
Atomic Number: 36
Atomic Mass: 83.8 amu
Melting Point: -157.2 ??C (115.950005 ??K, -250.95999 ??F)
Boiling Point: -153.4 ??C (119.75001 ??K, -244.12 ??F)		 Number of Protons/Electrons: 36
Number of Neutrons: 48
Classification: Noble Gas
Crystal Structure: Cubic
Density @ 293 K: 3.74 g/cm3
Color: colorless gas

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