Home
Compare Metals


Atomic Structure of Neptunium and Americium


Atomic Structure of Americium and Neptunium


Atomic Properties

Atomic Number
93   
25
95   
23

Electron Configuration
[Rn] 5f4 6d1 7s2   
[Rn] 5f7 7s2   

Crystal Structure
Orthorhombic (ORTH)   
Double Hexagonal Close Packed (DHCP)   

Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100   
DHCP-Crystal-Structure-of-Americium.jpg#100   

Atom
  
  

Number of Protons
93   
25
95   
23

Number of Neutrons
144   
14
148   
12

Number of Electrons
93   
25
95   
23

Radius of an Atom
  
  

Atomic Radius
155.00 pm   
30
173.00 pm   
21

Covalent Radius
190.00 pm   
18
180.00 pm   
21

Van der Waals Radius
221.00 pm   
22
244.00 pm   
10

Atomic Weight
237.00 amu   
22
243.00 amu   
20

Atomic Volume
11.62 cm3/mol   
99+
17.86 cm3/mol   
29

Adjacent Atomic Numbers
  
  

Previous Element
Uranium
  
Plutonium
  

Next Element
Plutonium
  
Curium
  

Valence Electron Potential
96.00 (-eV)   
9
44.00 (-eV)   
40

Lattice Constant
666.30 pm   
3
346.81 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   

Mechanical >>
<< Chemical

Compare Actinide Series

Actinide Metals

Actinide Metals

» More Actinide Metals

Compare Actinide Series

» More Compare Actinide Series