Atomic Structure of Praseodymium and Actinium
Atomic Properties
Atomic Number
59
99+
89
29
Electron Configuration
[Xe] 4f3 6s2
[Rn] 6d1 7s2
Crystal Structure
Hexagonal Close Packed (HCP)
Face Centered Cubic (FCC)
Crystal Lattice
HCP-Crystal-Structure-of-Praseodymium.jpg#100
FCC-Crystal-Structure-of-Actinium.jpg#100
Atom
Number of Protons
59
99+
89
29
Number of Neutrons
82
99+
138
16
Number of Electrons
59
99+
89
29
Radius of an Atom
Atomic Radius
182.00 pm
11
195.00 pm
7
Covalent Radius
203.00 pm
9
Not Available
Van der Waals Radius
239.00 pm
14
Not Available
Atomic Weight
140.91 amu
99+
227.00 amu
25
Atomic Volume
20.80 cm3/mol
15
22.54 cm3/mol
11
Adjacent Atomic Numbers
Valence Electron Potential
42.64 (-eV)
99+
38.60 (-eV)
99+
Lattice Constant
367.25 pm
29
567.00 pm
8
Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
Lattice C/A Ratio
1.61
4
Not Available
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