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Promethium
Promethium

Radium
Radium



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Promethium
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Radium

Atomic Structure of Promethium and Radium

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Atomic

Atomic Number

Electron Configuration

Crystal Structure

Crystal Lattice

Number of Protons

Number of Neutrons

Number of Electrons

Atomic Radius

Covalent Radius

Van der Waals Radius

Atomic Weight

Atomic Volume

Previous Element

Next Element

Valence Electron Potential

Lattice Constant

Lattice Angles

Lattice C/A Ratio

 
61
[Xe] 4f5 6s2
Double Hexagonal Close Packed (DHCP)
DHCP-Crystal-Structure-of-Promethium.jpg#100
61
84
61
183.00 pm
199.00 pm
236.00 pm
145.00 amu
22.39 cm3/mol
13
50
44.10 (-eV)
-
-
1.63
 
88
[Rn] 7s2
Body Centered Cubic (BCC)
BCC-Crystal-Structure-.jpg#100
88
138
88
215.00 pm
221.00 pm
283.00 pm
226.00 amu
45.20 cm3/mol
47
53
20.10 (-eV)
514.80 pm
π/2, π/2, π/2
1.57