Atomic Structure of Praseodymium and Neptunium
Atomic Properties
Atomic Number
59
99+
93
25
Electron Configuration
[Xe] 4f3 6s2
[Rn] 5f4 6d1 7s2
Crystal Structure
Hexagonal Close Packed (HCP)
Orthorhombic (ORTH)
Crystal Lattice
HCP-Crystal-Structure-of-Praseodymium.jpg#100
ORTH-Crystal-Structure-of-Neptunium.jpg#100
Atom
Number of Protons
59
99+
93
25
Number of Neutrons
82
99+
144
14
Number of Electrons
59
99+
93
25
Radius of an Atom
Atomic Radius
182.00 pm
11
155.00 pm
30
Covalent Radius
203.00 pm
9
190.00 pm
18
Van der Waals Radius
239.00 pm
14
221.00 pm
22
Atomic Weight
140.91 amu
99+
237.00 amu
22
Atomic Volume
20.80 cm3/mol
15
11.62 cm3/mol
99+
Adjacent Atomic Numbers
Valence Electron Potential
42.64 (-eV)
99+
96.00 (-eV)
9
Lattice Constant
367.25 pm
29
666.30 pm
3
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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