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Periodic Table Element Comparison: Compare Elements - Potassium vs Cesium

Compare Potassium and Cesium

Compare Potassium and Cesium on the basis of their properties, attributes and periodic table facts. Compare elements on more than 90 properties. All the elements of similar categories show a lot of similarities and differences in their chemical, atomic, physical properties and uses. These similarities and dissimilarities should be known while we study periodic table elements. You can study the detailed comparison between Potassium vs Cesium with most reliable information about their properties, attributes, facts, uses etc. You can compare K vs Cs on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

Facts

Potassium
19
K
39.0983
Solid
Silver
alkali metal
1
lithium family 
4
s
[Ar] 4s1
63.38 °C
759 °C
2, 8, 8, 1
CAS7440-09-7
Neighborhood Elements of Potassium
Cesium
55
Cs
132.90545
Solid
Silver
alkali metal
1
lithium family 
6
s
[Xe] 6s1
28.44 °C
671 °C
2, 8, 18, 18, 8, 1
CAS7440-46-2
Neighborhood Elements of Cesium

History

History
The element Potassium was discovered by Humphry Davy in year 1807 in United Kingdom. Potassium derived its name from from New Latin potassa, 'potash' (kalium in Latin)
The element Cesium was discovered by Robert Bunsen in year 1860 in Germany. Cesium derived its name derived its name from from the Latin caesius, meaning 'sky blue'

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
3e-06
4e-06
0.0007
0.015
0.00042
0.002
8×10-8%
8×10-7%
1.4e-07
1.9e-06
5×10-8%
2×10-6%

Crystal Structure and Atomic Structure

243 pm
45.67558411215 cm3
196 pm
275 pm
2.1
potassium Spectrum
532.8, 532.8, 532.8 pm
π/2, π/2, π/2
Im_ 3m
229

Body Centered Cubic

potassium Crystal Structure
298 pm
70.732011708356 cm3
225 pm
N/A
29
cesium Spectrum
614.1, 614.1, 614.1 pm
π/2, π/2, π/2
Im_ 3m
229

Body Centered Cubic

cesium Crystal Structure

Atomic and Orbital Properties

Atomic Number
Number of Electrons (with no charge)
Number of Protons
Mass Number
Number of Neutrons
Shell structure (Electrons per energy level)
Electron Configuration
Valence Electrons
Oxidation State
Atomic Term Symbol (Quantum Numbers)
Shell structure
19
19
19
39.0983
20.0983
2, 8, 8, 1
[Ar] 4s1
4s1
-1  1
2S1/2
potassium Shells
55
55
55
132.90545
77.90545
2, 8, 18, 18, 8, 1
[Xe] 6s1
6s1
-1  1
2S1/2
cesium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
39K, 41K.
Naturally occurring stable isotopes:
133Cs.

Chemical Properties: Ionization Energies and electron affinity

1
0.82
48.4 kJ/mol
418.8, 3052, 4420, 5877, 7975, 9590, 11343, 14944, 16963.7, 48610 kJ/mol
1
0.79
45.5 kJ/mol
375.7, 2234.3, 3.4×103 kJ/mol

Physical Properties

0.856 g/cm3
45.67558411215

 

N/A
1.3 GPa
3.1 GPa
N/A


 

0.4 MPa
N/A
0.363 MPa

 

1.4×107 S/m
7×10-8 m Ω
N/A

 

100 W/(m K)
N/A

 

Paramagnetic
N/A
6.7×10-9
2.62×10-10
5.74×10-6

 

N/A

 

2×103 m/s
1.879 g/cm3
70.732011708356

 

1.7 GPa
N/A
1.6 GPa
N/A


 

0.2 MPa
N/A
0.14 MPa

 

5×106 S/m
2×10-7 m Ω
N/A

 

36 W/(m K)
N/A

 

Paramagnetic
N/A
2.8×10-9
3.72×10-10
5.26×10-6

 

N/A

 

N/A

Thermal Properties - Enthalpies and thermodynamics

63.38 °C
759 °C
2223 K
N/A

 

2.33 kJ/mol
76.9 kJ/mol
-182 J/(kg K)
28.44 °C
671 °C
1938 K
N/A

 

2.09 kJ/mol
65 kJ/mol
N/A

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-09-7
RTECSTS6460000
4.3
2257
N/A
3
Water Reactive
3
2

 

440 °C
N/A
CAS7440-46-2
RTECSFK9225000
4.3
1407
N/A
N/A
Water Reactive
N/A
N/A

 

N/A
N/A