Ciro Santilli
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中国独裁统治 China Dictatorship 新疆改造中心、六四事件、法轮功、郝海东、709大抓捕、2015巴拿马文件 邓家贵、低端人口、西藏骚乱
Chemical element
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743
107
Hydrogen (H, 1)
Chemical element
52
10
Water
Hydrogen
2
Ice
Water
1
Snow
Ice
Isotope of hydrogen
Hydrogen
52
6
Protium (
1
H, stable, 99.98%)
Isotope of hydrogen
Deuterium (
2
H, stable, 0.02%)
Isotope of hydrogen
50
3
Heavy water
Deuterium
30
2
Semiheavy water
Heavy water
Girdler sulfide process
Heavy water
Tritium (
3
H, 12 y)
Isotope of hydrogen
2
Helium (He, 2)
Chemical element
104
6
Helium-3
Helium
Helium-4
Helium
Liquid helium (4.2 K, Helium I)
Helium
104
3
Superfluid helium
Liquid helium
74
2
Superfluid helium-3 (observed 1972)
Superfluid helium
57
Superfluid helium-4 (Helium II)
Superfluid helium
17
Boron (B, 5)
Chemical element
Carbon (C, 6)
Chemical element
100
20
Carbon isotope
Carbon
5
Carbon-12 (stable, 99%)
Carbon isotope
Carbon-13 (stable, 1%)
Carbon isotope
Carbon-14 (5 ky)
Carbon isotope
2
Radiocarbon dating
Carbon-14
1
Before Present
Radiocarbon dating
Carbon compound
Carbon
100
13
Allotrope of carbon
Carbon compound
100
6
Diamond
Allotrope of carbon
Fullerene
Allotrope of carbon
92
1
Endohedral fullerene
Fullerene
6
Graphite
Allotrope of carbon
8
2
Nuclear graphite
Graphite
Graphene
Graphite
5
Carbonate (
C
O
3
2
−
)
Carbon compound
5
Calcium carbonate (
C
a
C
O
3
)
Carbonate
4
Calcium carbonate polymorph
Calcium carbonate
3
Calcite
Calcium carbonate polymorph
Aragonite (1797)
Calcium carbonate polymorph
Vaterite
Calcium carbonate polymorph
Nitrogen (N, 7)
Chemical element
91
3
Liquid nitrogen
Nitrogen
91
Nitrogen compound
Nitrogen
1
Ammonium
Nitrogen compound
Oxygen (O, 8)
Chemical element
6
1
Quartz (
S
i
O
2
)
Oxygen
6
Neon (Ne, 10)
Chemical element
Sodium (Na, 11)
Chemical element
1
Sodium chloride (NaCl)
Sodium
Aluminium (Al, 13)
Chemical element
1
Superconducting temperature of aluminum (1.2 kelvin)
Aluminium
Silicon (Si, 14)
Chemical element
Phosphorus (P, 15, 3s2 3d3)
Chemical element
2
Why phosphorus has multiple valencies?
Phosphorus
Phosphate (
P
O
4
3
−
)
Phosphorus
Sulfur (S, 16)
Chemical element
26
2
Sulfur compound
Sulfur
26
1
Sulfur hydrade (
H
2
O
)
Sulfur compound
26
Argon (Ar, 18)
Chemical element
Potassium (K, 19,
4
s
1
)
Chemical element
Calcium (Ca, 20,
4
s
2
)
Chemical element
Titanium (Ti, 22)
Chemical element
2
Titanium compound
Titanium
1
Niobium-Titanium (Nb-Ti)
Titanium compound
Chromium (Cr, 24)
Chemical element
Iron (Fe, 26)
Chemical element
39
2
Fe-C
Iron
30
Steel (Fe-C)
Iron
9
Gallium (Ga, 31)
Chemical element
99
3
Gallium compound
Gallium
99
2
Gallium arsenide
Gallium compound
99
1
Gallium arsenide vs silicon (GaAs)
Gallium arsenide
82
Germanium (Ge, 32)
Chemical element
Arsenide (As, 33)
Chemical element
1
Arsenide compound
Arsenide
Selenium (Se, 34)
Chemical element
Bromine (Br, 35, 4s2 4p5)
Chemical element
3
Bromide (
B
r
−
)
Bromine
2
Organic bromide compound
Bromide
1
Ethidium bromide
Organic bromide compound
Niobium (Nb, 41)
Chemical element
6
2
Niobium compound
Niobium
Niobium-tin (
N
b
3
S
n
, Nb-Sn)
Niobium
6
Silver (Ag, 47, 4d10 5s1)
Chemical element
Cadmium (Ca, 48)
Chemical element
Tin (Sn, 50, Stannum)
Chemical element
1
Tin compound
Tin
Caesium (Cs, 55,
6
s
1
)
Chemical element
138
3
Caesium-133 (stable)
Caesium
2
Caesium-137 (radioactive)
Caesium
136
1
Goiânia accident (1987)
Caesium-137
9
Ytterbium (Yb, 60,
4
d
1
)
Chemical element
8
Gold (Au, 79)
Chemical element
7
1
Gold leaf
Gold
7
Lead (Pb, 82)
Chemical element
Polonium (Po, 84)
Chemical element
15
2
Polonium isotope
Polonium
15
1
Polonium-210 (140d)
Polonium isotope
10
Radium (Ra, 88)
Chemical element
46
Uranium (U, 92)
Chemical element
3
6
Uranium vs plutonium Quora answer by Ciro Santilli
Uranium
Uranium isotope
Uranium
3
Uranium-235 (4 Gy, 700 My)
Uranium isotope
Uranium-238 (4 Gy)
Uranium isotope
1
Uranium 238 decay chain
Uranium-238
Enriched uranium
Uranium
Plutonium (Pu, 94)
Chemical element
3
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