Atomic Structure of Neptunium and Berkelium
Atomic Properties
Atomic Number
93
25
97
21
Electron Configuration
[Rn] 5f4 6d1 7s2
[Rn] 5f9 7s2
Crystal Structure
Orthorhombic (ORTH)
Double Hexagonal Close Packed (DHCP)
Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100
DHCP-Crystal-Structure-of-Berkelium.jpg#100
Atom
Number of Protons
93
25
97
21
Number of Neutrons
144
14
150
11
Number of Electrons
93
25
97
21
Radius of an Atom
Atomic Radius
155.00 pm
30
170.00 pm
22
Covalent Radius
190.00 pm
18
Not Available
Van der Waals Radius
221.00 pm
22
Not Available
Atomic Weight
237.00 amu
22
247.00 amu
18
Atomic Volume
11.62 cm3/mol
99+
Not Available
Adjacent Atomic Numbers
Valence Electron Potential
96.00 (-eV)
9
45.50 (-eV)
36
Lattice Constant
666.30 pm
3
341.60 pm
99+
Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
Lattice C/A Ratio
Not Available
Not Available
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