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Beryllium
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Mendelevium
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Beryllium
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Mendelevium
Atomic Structure of Beryllium and Mendelevium
Beryllium
Mendelevium
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Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
All
Atomic
Atomic Number
4
101
3
117
👆🏻
Electron Configuration
[He] 2s
2
[Rn] 5f
13
7s
2
Crystal Structure
Hexagonal Close Packed (HCP)
Not Known
Crystal Lattice
Atom
Number of Protons
4
101
3
117
👆🏻
Number of Neutrons
5
157
4
285
👆🏻
Number of Electrons
4
101
3
117
👆🏻
Radius of an Atom
Atomic Radius
112.00 pm
175.00 pm
0
348
👆🏻
Covalent Radius
96.00 pm
175.00 pm
0
260
👆🏻
Van der Waals Radius
153.00 pm
246.00 pm
0
348
👆🏻
Atomic Weight
9.01 amu
258.00 amu
6.94
294
👆🏻
Atomic Volume
5.00 cm3/mol
19.90 cm3/mol
1.39
71.07
👆🏻
Adjacent Atomic Numbers
Previous Element
Next Element
Valence Electron Potential
82.00 (-eV)
63.70 (-eV)
0
392.42
👆🏻
Lattice Constant
228.58 pm
-
0
891.25
👆🏻
Lattice Angles
π/2, π/2, π/2
-
Lattice C/A Ratio
1.57
1.58
0.423
1.9
👆🏻
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