Atomic Structure of Thulium and Lutetium
Atomic Properties
Atomic Number
69
99+
71
99+
Electron Configuration
[Xe] 4f13 6s2
[Xe] 6s2 4f14 5d1
Crystal Structure
Hexagonal Close Packed (HCP)
Hexagonal Close Packed (HCP)
Crystal Lattice
HCP-Crystal-Structure-of-Thulium.jpg#100
BCC-Crystal-Structure-.jpg#100
Atom
Number of Protons
69
99+
71
99+
Number of Neutrons
100
32
104
30
Number of Electrons
69
99+
71
99+
Radius of an Atom
Atomic Radius
176.00 pm
18
174.00 pm
20
Covalent Radius
160.00 pm
30
187.00 pm
20
Van der Waals Radius
Not Available
221.00 pm
22
Atomic Weight
168.93 amu
99+
174.97 amu
40
Atomic Volume
18.10 cm3/mol
28
17.78 cm3/mol
30
Adjacent Atomic Numbers
Valence Electron Potential
49.70 (-eV)
28
50.90 (-eV)
26
Lattice Constant
353.75 pm
40
350.31 pm
99+
Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
Lattice C/A Ratio
1.57
17
1.59
10
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