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Sodium
Isotopes Known of Ruthenium
Kr (Symbol of Krypton)
84 (Atomic Number of Polonium)
Ionization Energies of Chromium in kcal/mol
Hydrogen (H) Properties
H
Hydrogen
Properties
36 /
87
Atomic Mass
1.008
amu
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
Electrons per Shell
1
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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2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
N
Sy
Name
Discovered (Location)
Discovered (Location)
Austria
China
Denmark
Egypt
Finland
France
Germany
Italy
Mesopotamia
Mexico
Middle East
Peru
Romania
Russia
Spain
Sweden
Switzerland
The United Kingdom
The United States
Cell colors represent Discovered (Location) –
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Lanthanides
(All Group 3)
6
Actinides
(All Group 3)
7
1
H
Hydrogen
The United Kingdom
2
He
Helium
Sweden, The United Kingdom
3
Li
Lithium
Sweden
4
Be
Beryllium
France
5
B
Boron
France, The United Kingdom
6
C
Carbon
Egypt
7
N
Nitrogen
The United Kingdom
8
O
Oxygen
Sweden, The United Kingdom
9
F
Fluorine
France
10
Ne
Neon
The United Kingdom
11
Na
Sodium
The United Kingdom
12
Mg
Magnesium
The United Kingdom
13
Al
Aluminum
Denmark
14
Si
Silicon
Sweden
15
P
Phosphorus
Germany
16
S
Sulfur
China
17
Cl
Chlorine
Sweden
18
Ar
Argon
The United Kingdom
19
K
Potassium
The United Kingdom
20
Ca
Calcium
The United Kingdom
21
Sc
Scandium
Sweden
22
Ti
Titanium
The United Kingdom
23
V
Vanadium
Mexico, Sweden
24
Cr
Chromium
France
25
Mn
Manganese
Sweden
26
Fe
Iron
Egypt, Mesopotamia
27
Co
Cobalt
Sweden
28
Ni
Nickel
Sweden
29
Cu
Copper
Middle East
30
Zn
Zinc
Germany
31
Ga
Gallium
France
32
Ge
Germanium
Germany
33
As
Arsenic
34
Se
Selenium
Sweden
35
Br
Bromine
France
36
Kr
Krypton
The United Kingdom
37
Rb
Rubidium
Germany
38
Sr
Strontium
The United Kingdom
39
Y
Yttrium
Finland
40
Zr
Zirconium
Germany
41
Nb
Niobium
The United Kingdom
42
Mo
Molybdenum
Sweden
43
Tc
Technetium
Italy
44
Ru
Ruthenium
Russia
45
Rh
Rhodium
The United Kingdom
46
Pd
Palladium
The United Kingdom
47
Ag
Silver
48
Cd
Cadmium
Germany
49
In
Indium
Germany
50
Sn
Tin
51
Sb
Antimony
52
Te
Tellurium
Romania
53
I
Iodine
France
54
Xe
Xenon
The United Kingdom
55
Cs
Cesium
Germany
56
Ba
Barium
The United Kingdom
57
La
Lanthanum
Sweden
58
Ce
Cerium
Germany, Sweden
59
Pr
Praseodymium
Austria
60
Nd
Neodymium
Austria
61
Pm
Promethium
The United States
62
Sm
Samarium
France
63
Eu
Europium
France
64
Gd
Gadolinium
Switzerland
65
Tb
Terbium
Sweden
66
Dy
Dysprosium
France
67
Ho
Holmium
Switzerland
68
Er
Erbium
Sweden
69
Tm
Thulium
Sweden
70
Yb
Ytterbium
Switzerland
71
Lu
Lutetium
France, Germany
72
Hf
Hafnium
Denmark
73
Ta
Tantalum
Sweden
74
W
Tungsten
Spain
75
Re
Rhenium
Germany
76
Os
Osmium
The United Kingdom
77
Ir
Iridium
France, The United Kingdom
78
Pt
Platinum
Peru
79
Au
Gold
Middle East
80
Hg
Mercury
81
Tl
Thallium
The United Kingdom
82
Pb
Lead
Middle East
83
Bi
Bismuth
France
84
Po
Polonium
France
85
At
Astatine
The United States
86
Rn
Radon
Germany
87
Fr
Francium
France
88
Ra
Radium
France
89
Ac
Actinium
France
90
Th
Thorium
Sweden
91
Pa
Protactinium
Germany, The United Kingdom
92
U
Uranium
Germany
93
Np
Neptunium
The United States
94
Pu
Plutonium
The United States
95
Am
Americium
The United States
96
Cm
Curium
The United States
97
Bk
Berkelium
The United States
98
Cf
Californium
The United States
99
Es
Einsteinium
The United States
100
Fm
Fermium
The United States
101
Md
Mendelevium
The United States
102
No
Nobelium
Sweden, The United States
103
Lr
Lawrencium
The United States
104
Rf
Rutherfordium
Russia, The United States
105
Db
Dubnium
Russia, The United States
106
Sg
Seaborgium
The United States
107
Bh
Bohrium
Germany
108
Hs
Hassium
Germany
109
Mt
Meitnerium
Germany
110
Ds
Darmstadtium
Germany
111
Rg
Roentgenium
Germany
112
Cn
Copernicium
Germany
113
Nh
Nihonium
Russia, The United States
114
Fl
Flerovium
Russia
115
Mc
Moscovium
Russia, The United States
116
Lv
Livermorium
Russia
117
Ts
Tennessine
118
Og
Oganesson
Russia, The United States
Group
Period
Periodic
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