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Polonium
Heat of Osmium
Y (Symbol of Yttrium)
101 (Atomic Number of Mendelevium)
Neel Point of Zirconium in °F
Boron (B) Properties
B
Boron
Properties
36 /
87
Atomic Mass
10.81
amu
Atomic Number
5
Block
P
Boiling Point
4200
K
Conductivity (Electric)
1.000e-10
MS/m
Conductivity (Thermal)
27
W/mK
Crystal Structure
Simple Trigonal
Decay Mode
—
Density (Liquid)
2080
kg/m³
Density (STP)
2460
kg/m³
Electron Affinity
26.99
kJ/mol
Electron Configuration (Semantic)
[He] 2s² 2p¹
Electronegativity (Pauling)
2.04
Electrons per Shell
2, 3
Group
13
Half Life
Stable
year
Heat (Fusion)
50
kJ/mol
Heat (Molar)
11.09
J/K.mol
Heat (Specific)
1030
J/(kg K)
Heat (Vaporization)
507
kJ/mol
Ionization Energies
800.6, 2427, 3660, 25030, 32830
kJ/mol
Isotopes Known
⁶B, ⁷B, ⁸B, ⁹B, ¹⁰B, ¹¹B, ¹²B, ¹³B, ¹⁴B, ¹⁵B, ¹⁶B, ¹⁷B, ¹⁸B, ¹⁹B
Isotopes Stable
¹⁰B, ¹¹B
Magnetic Type
Diamagnetic
Melting Point
2349
K
Molar Volume
0.0000043943
Oxidation States
1,2,3c
Period
2
Phase
Solid
@ 22°C
Quantum Numbers
2P1/2
Radius (Covalent)
82
pm
Radius (Empirical)
85
pm
Radius (Van Der Waals)
—
Series
Metalloid
Valence Electrons
3
Wikipedia
https://en.wikipedia.org/wiki/Boron
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18
1
2
3
4
5
6
7
N
Sy
Name
Hardness (Mohs)
Hardness (Mohs)
0.2
Linear
9.3
Cell colors represent Hardness (Mohs) –
Show Series Instead
Lanthanides
(All Group 3)
6
Actinides
(All Group 3)
7
1
H
Hydrogen
2
He
Helium
3
Li
Lithium
0.6
4
Be
Beryllium
5.5
5
B
Boron
9.3
6
C
Carbon
0.5
7
N
Nitrogen
8
O
Oxygen
9
F
Fluorine
10
Ne
Neon
11
Na
Sodium
0.5
12
Mg
Magnesium
2.5
13
Al
Aluminum
2.75
14
Si
Silicon
6.5
15
P
Phosphorus
16
S
Sulfur
2
17
Cl
Chlorine
18
Ar
Argon
19
K
Potassium
0.4
20
Ca
Calcium
1.75
21
Sc
Scandium
22
Ti
Titanium
6
23
V
Vanadium
7
24
Cr
Chromium
8.5
25
Mn
Manganese
6
26
Fe
Iron
4
27
Co
Cobalt
5
28
Ni
Nickel
4
29
Cu
Copper
3
30
Zn
Zinc
2.5
31
Ga
Gallium
1.5
32
Ge
Germanium
6
33
As
Arsenic
3.5
34
Se
Selenium
2
35
Br
Bromine
36
Kr
Krypton
37
Rb
Rubidium
0.3
38
Sr
Strontium
1.5
39
Y
Yttrium
40
Zr
Zirconium
5
41
Nb
Niobium
6
42
Mo
Molybdenum
5.5
43
Tc
Technetium
44
Ru
Ruthenium
6.5
45
Rh
Rhodium
6
46
Pd
Palladium
4.75
47
Ag
Silver
2.5
48
Cd
Cadmium
2
49
In
Indium
1.2
50
Sn
Tin
1.5
51
Sb
Antimony
3
52
Te
Tellurium
2.25
53
I
Iodine
54
Xe
Xenon
55
Cs
Cesium
0.2
56
Ba
Barium
1.25
57
La
Lanthanum
2.5
58
Ce
Cerium
2.5
59
Pr
Praseodymium
60
Nd
Neodymium
61
Pm
Promethium
62
Sm
Samarium
63
Eu
Europium
64
Gd
Gadolinium
65
Tb
Terbium
66
Dy
Dysprosium
67
Ho
Holmium
68
Er
Erbium
69
Tm
Thulium
70
Yb
Ytterbium
71
Lu
Lutetium
72
Hf
Hafnium
5.5
73
Ta
Tantalum
6.5
74
W
Tungsten
7.5
75
Re
Rhenium
7
76
Os
Osmium
7
77
Ir
Iridium
6.5
78
Pt
Platinum
3.5
79
Au
Gold
2.5
80
Hg
Mercury
81
Tl
Thallium
1.2
82
Pb
Lead
1.5
83
Bi
Bismuth
2.25
84
Po
Polonium
85
At
Astatine
86
Rn
Radon
87
Fr
Francium
88
Ra
Radium
89
Ac
Actinium
90
Th
Thorium
3
91
Pa
Protactinium
92
U
Uranium
6
93
Np
Neptunium
94
Pu
Plutonium
95
Am
Americium
96
Cm
Curium
97
Bk
Berkelium
98
Cf
Californium
99
Es
Einsteinium
100
Fm
Fermium
101
Md
Mendelevium
102
No
Nobelium
103
Lr
Lawrencium
104
Rf
Rutherfordium
105
Db
Dubnium
106
Sg
Seaborgium
107
Bh
Bohrium
108
Hs
Hassium
109
Mt
Meitnerium
110
Ds
Darmstadtium
111
Rg
Roentgenium
112
Cn
Copernicium
113
Nh
Nihonium
114
Fl
Flerovium
115
Mc
Moscovium
116
Lv
Livermorium
117
Ts
Tennessine
118
Og
Oganesson
Group
Period
Periodic
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