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Neodymium
Electrons Per Shell of Technetium
H (Symbol of Hydrogen)
16 (Atomic Number of Sulfur)
Half Life of Astatine in h
Cesium (Cs) Properties
Cs
Cesium
Properties
36 /
87
Atomic Mass
132.9
amu
Atomic Number
55
Block
S
Boiling Point
944
K
Conductivity (Electric)
5
MS/m
Conductivity (Thermal)
36
W/mK
Crystal Structure
Body-centered Cubic
Decay Mode
—
Density (Liquid)
1843
kg/m³
Density (STP)
1879
kg/m³
Electron Affinity
45.51
kJ/mol
Electron Configuration (Semantic)
[Xe] 6s¹
Electronegativity (Pauling)
0.79
Electrons per Shell
2, 8, 18, 18, 8, 1
Group
1
Half Life
Stable
year
Heat (Fusion)
2.09
kJ/mol
Heat (Molar)
32.21
J/K.mol
Heat (Specific)
242
J/(kg K)
Heat (Vaporization)
65
kJ/mol
Ionization Energies
375.7, 2234, 3400
kJ/mol
Isotopes Known
¹¹²Cs, ¹¹³Cs, ¹¹⁴Cs, ¹¹⁵Cs, ¹¹⁶Cs, ¹¹⁷Cs, ¹¹⁸Cs, ¹¹⁹Cs, ¹²⁰Cs, ¹²¹Cs, ¹²²Cs, ¹²³Cs, ¹²⁴Cs, ¹²⁵Cs, ¹²⁶Cs, ¹²⁷Cs, ¹²⁸Cs, ¹²⁹Cs, ¹³⁰Cs, ¹³¹Cs, ¹³²Cs, ¹³³Cs, ¹³⁴Cs, ¹³⁵Cs, ¹³⁶Cs, ¹³⁷Cs, ¹³⁸Cs, ¹³⁹Cs, ¹⁴⁰Cs, ¹⁴¹Cs, ¹⁴²Cs, ¹⁴³Cs, ¹⁴⁴Cs, ¹⁴⁵Cs, ¹⁴⁶Cs, ¹⁴⁷Cs, ¹⁴⁸Cs, ¹⁴⁹Cs, ¹⁵⁰Cs, ¹⁵¹Cs
Isotopes Stable
¹³³Cs
Magnetic Type
Paramagnetic
Melting Point
301.7
K
Molar Volume
0.000070732
Oxidation States
-1,1c
Period
6
Phase
Solid
@ 22°C
Quantum Numbers
2S1/2
Radius (Covalent)
225
pm
Radius (Empirical)
260
pm
Radius (Van Der Waals)
—
Series
Alkali Metal
Valence Electrons
1
Wikipedia
https://en.wikipedia.org/wiki/Cesium
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18
1
2
3
4
5
6
7
N
Sy
Name
Radius (Calculated)
Radius (Calculated)
pm
31
Linear
298
Cell colors represent Radius (Calculated) –
Show Series Instead
Lanthanides
(All Group 3)
6
Actinides
(All Group 3)
7
1
H
Hydrogen
53
2
He
Helium
31
3
Li
Lithium
167
4
Be
Beryllium
112
5
B
Boron
87
6
C
Carbon
67
7
N
Nitrogen
56
8
O
Oxygen
48
9
F
Fluorine
42
10
Ne
Neon
38
11
Na
Sodium
190
12
Mg
Magnesium
145
13
Al
Aluminum
118
14
Si
Silicon
111
15
P
Phosphorus
98
16
S
Sulfur
88
17
Cl
Chlorine
79
18
Ar
Argon
71
19
K
Potassium
243
20
Ca
Calcium
194
21
Sc
Scandium
184
22
Ti
Titanium
176
23
V
Vanadium
171
24
Cr
Chromium
166
25
Mn
Manganese
161
26
Fe
Iron
156
27
Co
Cobalt
152
28
Ni
Nickel
149
29
Cu
Copper
145
30
Zn
Zinc
142
31
Ga
Gallium
136
32
Ge
Germanium
125
33
As
Arsenic
114
34
Se
Selenium
103
35
Br
Bromine
94
36
Kr
Krypton
88
37
Rb
Rubidium
265
38
Sr
Strontium
219
39
Y
Yttrium
212
40
Zr
Zirconium
206
41
Nb
Niobium
198
42
Mo
Molybdenum
190
43
Tc
Technetium
183
44
Ru
Ruthenium
178
45
Rh
Rhodium
173
46
Pd
Palladium
169
47
Ag
Silver
165
48
Cd
Cadmium
161
49
In
Indium
156
50
Sn
Tin
145
51
Sb
Antimony
133
52
Te
Tellurium
123
53
I
Iodine
115
54
Xe
Xenon
108
55
Cs
Cesium
298
56
Ba
Barium
253
57
La
Lanthanum
58
Ce
Cerium
59
Pr
Praseodymium
247
60
Nd
Neodymium
206
61
Pm
Promethium
205
62
Sm
Samarium
238
63
Eu
Europium
231
64
Gd
Gadolinium
233
65
Tb
Terbium
225
66
Dy
Dysprosium
228
67
Ho
Holmium
226
68
Er
Erbium
226
69
Tm
Thulium
222
70
Yb
Ytterbium
222
71
Lu
Lutetium
217
72
Hf
Hafnium
208
73
Ta
Tantalum
200
74
W
Tungsten
193
75
Re
Rhenium
188
76
Os
Osmium
185
77
Ir
Iridium
180
78
Pt
Platinum
177
79
Au
Gold
174
80
Hg
Mercury
171
81
Tl
Thallium
156
82
Pb
Lead
154
83
Bi
Bismuth
143
84
Po
Polonium
135
85
At
Astatine
127
86
Rn
Radon
120
87
Fr
Francium
88
Ra
Radium
89
Ac
Actinium
90
Th
Thorium
91
Pa
Protactinium
92
U
Uranium
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
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