Elements

Krypton - Kr

The element Krypton, atomic number 36, is formed from Type II supernova, which results from star core collapse.

1. Name:
2. Krypton

1. Symbol:
2. Kr

1. Atomic number (protons):
2. 36

1. How created:
2. Type II supernova

1. Process:
2. star core collapse

1. Group (column):
2. 18

1. Period (row):
2. 4

1. Atomic weight:
2. 83.798000000

1. Melting point:
2. 115.79 K

1. Boiling point:
2. 119.93 K

1. Density:
2. 0.0037330 g/cm³

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