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Periodic Table Element Comparison: Compare Elements - Chromium vs Potassium

Compare Chromium and Potassium

Compare Chromium and Potassium 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 Chromium vs Potassium with most reliable information about their properties, attributes, facts, uses etc. You can compare Cr vs K on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

Facts

Chromium
24
Cr
51.9961
Solid
Silver
transition metal
6
chromium family 
4
d
[Ar] 3d5 4s1
1907 °C
2671 °C
2, 8, 13, 1
CAS7440-47-3
Neighborhood Elements of Chromium
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

History

History
The element Chromium was discovered by Louis Nicolas Vauquelin in year 1797 in France. Chromium derived its name from from the Greek word chroma, meaning 'color'
The element Potassium was discovered by Humphry Davy in year 1807 in United Kingdom. Potassium derived its name derived its name from from New Latin potassa, 'potash' (kalium in Latin)

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
1.5e-05
2e-05
0.003
0.00014
6×10-8%
3×10-6%
3e-06
4e-06
0.0007
0.015
0.00042
0.002

Crystal Structure and Atomic Structure

166 pm
7.2823669467787 cm3
127 pm
N/A
3.1
chromium Spectrum
291, 291, 291 pm
π/2, π/2, π/2
Im_ 3m
229

Body Centered Cubic

chromium Crystal 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

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
24
24
24
51.9961
27.9961
2, 8, 13, 1
[Ar] 3d5 4s1
3d5 4s1
-4;-2;-1  1;2;3;4;5;6
7S3
chromium Shells
19
19
19
39.0983
20.0983
2, 8, 8, 1
[Ar] 4s1
4s1
-1  1
2S1/2
potassium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
50Cr, 52Cr, 53Cr, 54Cr.
Naturally occurring stable isotopes:
39K, 41K.

Chemical Properties: Ionization Energies and electron affinity

6
1.66
64.3 kJ/mol
652.9, 1590.6, 2987, 4743, 6702, 8744.9, 15455, 17820, 20190, 23580, 26130, 28750, 34230, 37066, 97510, 1.058×105, 1.143×105, 1.253×105, 1.347×105, 1.443×105, 1.577×105 kJ/mol
1
0.82
48.4 kJ/mol
418.8, 3052, 4420, 5877, 7975, 9590, 11343, 14944, 16963.7, 48610 kJ/mol

Physical Properties

7.14 g/cm3
7.2823669467787

 

279 GPa
115 GPa
160 GPa
0.21


 

8.5 MPa
1060 MPa
1120 MPa

 

7.9×106 S/m
1.3×10-7 m Ω
N/A

 

94 W/(m K)
4.9×10-6 K-1

 

Antiferromagnetic
N/A
4.45×10-8
2.314×10-9
0.0003177

 

N/A

 

5940 m/s
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

Thermal Properties - Enthalpies and thermodynamics

1907 °C
2671 °C
N/A
N/A

 

20.5 kJ/mol
339 kJ/mol
N/A
63.38 °C
759 °C
2223 K
N/A

 

2.33 kJ/mol
76.9 kJ/mol
-182 J/(kg K)

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-47-3
RTECSGB4200000
4.1
3089
N/A
1
N/A
2
1

 

400 °C
N/A
CAS7440-09-7
RTECSTS6460000
4.3
2257
N/A
3
Water Reactive
3
2

 

440 °C
N/A