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Lanthanum
Lanthanum

Promethium
Promethium



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Lanthanum
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Promethium

Atomic Structure of Lanthanum and Promethium

1 Atomic
1.1 Atomic Number
5761
Atomic Structure of Lithium
3 117
1.2 Electron Configuration
[Xe] 5d2 6s2
[Xe] 4f5 6s2
1.3 Crystal Structure
Double Hexagonal Close Packed (DHCP)
Double Hexagonal Close Packed (DHCP)
1.3.1 Crystal Lattice
1.4 Atom
1.4.1 Number of Protons
5761
Atomic Structure of Lithium
3 117
1.4.2 Number of Neutrons
8284
Atomic Structure of Lithium
4 184
1.4.3 Number of Electrons
5761
Atomic Structure of Lithium
3 117
1.5 Radius of an Atom
1.5.1 Atomic Radius
187.00 pm183.00 pm
Atomic Structure of Beryllium
112 265
1.5.2 Covalent Radius
207.00 pm199.00 pm
Atomic Structure of Beryllium
96 260
1.5.3 Van der Waals Radius
240.00 pm236.00 pm
Atomic Structure of Zinc
139 348
1.6 Atomic Weight
138.91 amu145.00 amu
Atomic Structure of Lithium
6.94 294
1.7 Atomic Volume
20.73 cm3/mol22.39 cm3/mol
Atomic Structure of Manganese
1.39 71.07
1.8 Adjacent Atomic Numbers
1.8.1 Previous Element
1.8.2 Next Element
1.9 Valence Electron Potential
40.71 (-eV)44.10 (-eV)
Atomic Structure of Francium
8 392.42
1.10 Lattice Constant
377.20 pmNA
Atomic Structure of Beryllium
228.58 891.25
1.11 Lattice Angles
π/2, π/2, 2 π/3
Unknown
1.12 Lattice C/A Ratio
1.62NA
Atomic Structure of Beryllium
1.567 1.886