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Sulfur
Allotropes of Tantalum
Cl (Symbol of Chlorine)
39 (Atomic Number of Yttrium)
Melting Point of Neon in °F
H
Hydrogen
Properties
Isotopes
Electrons
37 /
89
Atomic Mass
1.008
amu
1.008
Linear (amu)
294
Atomic Number
1
Block
S
Boiling Point
20.27
K
Conductivity (Electric)
—
Conductivity (Thermal)
0.1805
W/mK
Crystal Structure
Simple Hexagonal
Decay Mode
—
Density (Liquid)
—
Density (STP)
0.0899
kg/m³
Electron Affinity
72.77
kJ/mol
Electron Configuration (Semantic)
1s¹
Electronegativity (Pauling)
2.2
kJ/mol
Electrons Per Shell
1
Energy Levels
1
e⁻️
Group
1
Half Life
Stable
year
Heat (Fusion)
0.558
kJ/mol
Heat (Molar)
28.84
J/K.mol
Heat (Specific)
14300
J/(kg K)
Heat (Vaporization)
0.452
kJ/mol
Ionization Energies
1312
kJ/mol
Isotopes Known
¹H, ²H, ³H, ⁴H, ⁵H, ⁶H, ⁷H
Isotopes Stable
¹H, ²H
Magnetic Type
Diamagnetic
Melting Point
13.99
K
Molar Volume
0.01121
Oxidation States
-1c,1c
Period
1
Phase
Gas
@ 22°C
Quantum Numbers
2S1/2
Radius (Covalent)
37
pm
Radius (Empirical)
25
pm
Radius (Van Der Waals)
120
pm
Series
Diatomic Nonmetal
Valence Electrons
1
Wikipedia
https://en.wikipedia.org/wiki/Hydrogen
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118
294
1.008
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