Atomic Structure of Neptunium and Neodymium
Atomic Properties
Atomic Number
93
25
60
99+
Electron Configuration
[Rn] 5f4 6d1 7s2
[Xe] 4f4 6s2
Crystal Structure
Orthorhombic (ORTH)
Double Hexagonal Close Packed (DHCP)
Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100
DHCP-Crystal-Structure-of-Neodymium.jpg#100
Atom
Number of Protons
93
25
60
99+
Number of Neutrons
144
14
84
40
Number of Electrons
93
25
60
99+
Radius of an Atom
Atomic Radius
155.00 pm
30
181.00 pm
13
Covalent Radius
190.00 pm
18
201.00 pm
10
Van der Waals Radius
221.00 pm
22
229.00 pm
20
Atomic Weight
237.00 amu
22
144.24 amu
99+
Atomic Volume
11.62 cm3/mol
99+
20.60 cm3/mol
18
Adjacent Atomic Numbers
Valence Electron Potential
96.00 (-eV)
9
43.40 (-eV)
99+
Lattice Constant
666.30 pm
3
365.80 pm
30
Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
Lattice C/A Ratio
Not Available
1.61
4
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