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Elements

Thulium - Tm

The element Thulium, atomic number 69, is formed from neutron star merger, which results from .

      1. Name:
      2. Thulium
      1. Symbol:
      2. Tm
      1. Atomic number (protons):
      2. 69
      1. How created:
      2. neutron star merger
      1. How created (secondary):
      2. planetary nebula
      1. Period (row):
      2. 6
      1. Atomic weight:
      2. 168.934218000
      1. Melting point:
      2. 1818 K
      1. Boiling point:
      2. 2223 K
      1. Density:
      2. 9.3210000 g/cm3

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