Atomic Structure of Americium and Polonium
Atomic Properties
Atomic Number
95
23
84
32
Electron Configuration
[Rn] 5f7 7s2
[Xe] 4f14 5d10 6s2 6p4
Crystal Structure
Double Hexagonal Close Packed (DHCP)
Monoclinic (MON)
Crystal Lattice
DHCP-Crystal-Structure-of-Americium.jpg#100
MON-Crystal-Structure-of-Polonium.jpg#100
Atom
Number of Protons
95
23
84
32
Number of Neutrons
148
12
125
19
Number of Electrons
95
23
84
32
Radius of an Atom
Atomic Radius
173.00 pm
21
168.00 pm
23
Covalent Radius
180.00 pm
21
140.00 pm
99+
Van der Waals Radius
244.00 pm
10
197.00 pm
29
Atomic Weight
243.00 amu
20
209.00 amu
28
Atomic Volume
17.86 cm3/mol
29
22.23 cm3/mol
13
Adjacent Atomic Numbers
Valence Electron Potential
44.00 (-eV)
40
Not Available
Lattice Constant
346.81 pm
99+
335.90 pm
99+
Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
Not Available
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