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69 Tm Thulium (plaintext)
H He
Li Be B C N O F Ne
Na Mg Al Si P S Cl Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er[Tm]Yb Lu
Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
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| 69_____ |
| |_ _| __ ___ |
| | || '_ ` _ \ |
| | || | | | | | |
| |_||_| |_| |_| |
| |
| Thulium |
| 168.93422 u |
+--------------------+
Wiki Article: Thulium
Electron Configuration: [Xe]6s2 4f13
Electronegativity: 1.25
Atomic Radius: 227 pm
Ionization Energy: 6.184 eV
Electron Affinity:
Oxidation States: 3
Standard State: Solid
Melting Point: 1818 K
Boiling Point: 2223 K
Density: 9.32 g/cm3
Family: Lanthanide
Year Discovered: 1879
Number of Neutrons: 100
Number of Protons: 69
Number of Electrons: 69
Number of Valence:
Valency:
Group:
Period: 6
Shell: f-shell
Specific Heat: 0.160 J/g K
Radioactive: 0
Occurrence: Natural
Source: Merging neutron stars
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