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Nobelium Rubidium Comparison


Rubidium Nobelium comparison


Periodic Table

Symbol
No  
Rb  

Group Number
3  
15
1  
17

Period Number
7  
5  

Block
f block  
s block  

Element Family
Actinide  
Alkali  

CAS Number
10028145  
16
7440177  
99+

Space Group Name
-  
Im_ 3m  

Space Group Number
194.00  
7
229.00  
2

Facts

Interesting Facts
  • The most stable isotope of Nobelium metal is No-259.
  • No-259 has a half-life of fifty-eight minutes.
  
  • Rubidium metal is 16th most common element found in the earth crust.
  • Rubidium metal also found in minerals as well as seawater.
  

Sources
Bombarding Curium-246 or Curium-249 with Carbon-12 Nuclei, Found in Minerals, Mining  
Obtained from Lithium Production.  

History
  
  

Who Discovered
Joint Institute for Nuclear Research  
Robert Bunsen and Gustav Kirchhoff  

Discovery
In 1966  
In 1861  

Abundance
  
  

Abundance In Universe
-  
0.00 %  
17

Abundance In Sun
-  
0.00 %  
17

Abundance In Meteorites
-  
0.00 %  
19

Abundance In Earth's Crust
-  
0.01 %  
18

Abundance In Oceans
-  
0.00 %  
7

Abundance In Humans
-  
0.00 %  
8

Uses

Uses & Benefits
  • Currently known uses of Nobelium metal are limited to research purpose only.
  
  • Rubidium's main application is in the glass manufacturing.
  • Rubidium can very easily get ionized and hence it is used for ion engines, but it is still less efficient than that of Caesium.
  

Industrial Uses
-  
-  

Medical Uses
-  
-  

Other Uses
Research Purposes  
Alloys, Research Purposes  

Biological Properties
  
  

Toxicity
-  
Non Toxic  

Present in Human Body
No  
Yes  

In Blood
0.00 Blood/mg dm-3  
40
2.49 Blood/mg dm-3  
7

In Bone
0.00 p.p.m.  
99+
5.00 p.p.m.  
13

Physical

Melting Point
827.00 °C  
99+
38.89 °C  
99+

Boiling Point
2,600.00 °C  
99+
688.00 °C  
99+

Appearance
  
  

Physical State
Solid  
Solid  

Color
-  
Grayish White  

Luster
Unknown Luster  
-  

Hardness
  
  

Mohs Hardness
-  
0.30  
26

Brinell Hardness
500.00 MPa  
28
0.22 MPa  
99+

Vickers Hardness
500.00 MPa  
35
0.22 MPa  
99+

Speed of Sound
1,100.00 m/s  
99+
1,300.00 m/s  
99+

Optical Properties
  
  

Refractive Index
1.30  
99+
1.54  
35

Reflectivity
61.00 %  
22
52.00 %  
29

Allotropes
No  
No  

α Allotropes
-  
-  

β Allotropes
-  
-  

γ Allotropes
-  
-  

Chemical

Chemical Formula
No  
Rb  

Isotopes
  
  

Known Isotopes
13  
26
29  
10

Electronegativity
  
  

Pauling Electronegativity
1.30  
33
0.82  
99+

Sanderson Electronegativity
1.30  
25
0.31  
99+

Allred Rochow Electronegativity
1.20  
28
0.89  
99+

Mulliken-Jaffe Electronegativity
1.30  
33
0.69  
99+

Allen Electronegativity
1.10  
99+
0.71  
99+

Electropositivity
  
  

Pauling Electropositivity
2.70  
22
3.18  
3

Ionization Energies
  
  

1st Energy Level
642.00 kJ/mol  
99+
403.00 kJ/mol  
99+

2nd Energy Level
1,254.00 kJ/mol  
99+
2,633.00 kJ/mol  
6

3rd Energy Level
2,643.00 kJ/mol  
99+
3,860.00 kJ/mol  
11

4th Energy Level
3,956.00 kJ/mol  
99+
5,080.00 kJ/mol  
28

5th Energy Level
6,400.00 kJ/mol  
35
6,850.00 kJ/mol  
31

6th Energy Level
6,400.00 kJ/mol  
99+
8,140.00 kJ/mol  
31

7th Energy level
6,270.00 kJ/mol  
99+
9,570.00 kJ/mol  
20

8th Energy Level
6,270.00 kJ/mol  
99+
13,120.00 kJ/mol  
17

9th Energy Level
6,270.00 kJ/mol  
99+
14,500.00 kJ/mol  
18

10th Energy Level
6,270.00 kJ/mol  
99+
26,740.00 kJ/mol  
6

11th Energy Level
6,420.00 kJ/mol  
99+
4,030.00 kJ/mol  
99+

12th Energy Level
64,000.00 kJ/mol  
8
4,030.00 kJ/mol  
99+

13th Energy Level
6,400.00 kJ/mol  
36
4,030.00 kJ/mol  
99+

14th Energy Level
6,400.00 kJ/mol  
26
4,030.00 kJ/mol  
99+

15th Energy Level
64,000.00 kJ/mol  
36
40,300.00 kJ/mol  
99+

16th Energy Level
64,000.00 kJ/mol  
27
40,300.00 kJ/mol  
99+

17th Energy Level
641.00 kJ/mol  
99+
403.00 kJ/mol  
99+

18th Energy Level
3,500.00 kJ/mol  
99+
4,030.00 kJ/mol  
99+

19th Energy Level
627.60 kJ/mol  
99+
403.00 kJ/mol  
99+

20th Energy Level
627.00 kJ/mol  
99+
403.00 kJ/mol  
99+

21st Energy Level
917.00 kJ/mol  
34
403.00 kJ/mol  
99+

22nd Energy Level
627.00 kJ/mol  
36
403.00 kJ/mol  
99+

23rd Energy Level
6,410.00 kJ/mol  
12
403.00 kJ/mol  
99+

24th Energy Level
627.00 kJ/mol  
39
403.00 kJ/mol  
99+

25th Energy Level
0.00 kJ/mol  
99+
403.00 kJ/mol  
99+

26th Energy Level
601.20 kJ/mol  
99+
403.00 kJ/mol  
99+

27th Energy Level
641.00 kJ/mol  
37
403.00 kJ/mol  
99+

28th Energy Level
641.60 kJ/mol  
99+
403.00 kJ/mol  
99+

29th Energy Level
641.00 kJ/mol  
99+
403.00 kJ/mol  
99+

30th Energy Level
627.00 kJ/mol  
99+
403.00 kJ/mol  
99+

Electrochemical Equivalent
4.83 g/amp-hr  
4
3.19 g/amp-hr  
16

Electron Work Function
4.90 eV  
12
2.16 eV  
99+

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Corrosion, Ionization, Radioactive Isotopes, Radioactivity  

Atomic

Atomic Number
102  
16
37  
99+

Electron Configuration
[Rn] 5f14 7s2  
[Kr] 5s1  

Crystal Structure
Not Known  
Body Centered Cubic (BCC)  

Crystal Lattice
Unknown-Crystal-Structure-of-Nobelium.jpg#100  
BCC-Crystal-Structure-.jpg#100  

Atom
  
  

Number of Protons
102  
16
37  
99+

Number of Neutrons
157  
8
48  
99+

Number of Electrons
102  
16
37  
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm  
20
248.00 pm  
3

Covalent Radius
157.00 pm  
33
220.00 pm  
4

Van der Waals Radius
246.00 pm  
12
303.00 pm  
4

Atomic Weight
259.00 amu  
13
85.47 amu  
99+

Atomic Volume
19.80 cm3/mol  
33
55.90 cm3/mol  
3

Adjacent Atomic Numbers
  
  

Previous Element
Gallium
  

Next Element
Strontium
  

Valence Electron Potential
26.00 (-eV)  
99+
9.47 (-eV)  
99+

Lattice Constant
-  
558.50 pm  
11

Lattice Angles
-  
π/2, π/2, π/2  

Lattice C/A Ratio
1.76  
5
1.59  
28

Mechanical

Density
  
  

Density At Room Temperature
9.90 g/cm3  
99+
1.53 g/cm3  
99+

Density When Liquid (at m.p.)
9.90 g/cm3  
99+
1.46 g/cm3  
99+

Tensile Strength
80.00 MPa  
29
30.00 MPa  
99+

Viscosity
0.00  
25
0.00  
23

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37

Vapor Pressure at 2000 K
0.00 (Pa)  
28
0.00 (Pa)  
35

Elasticity properties
  
  

Shear Modulus
27.00 GPa  
34
2.50 GPa  
99+

Bulk Modulus
8.70 GPa  
99+
2.50 GPa  
99+

Young's Modulus
12.30 GPa  
99+
2.40 GPa  
99+

Poisson Ratio
0.30  
14
0.37  
7

Other Mechanical Properties
-  
Ductile  

Magnetic

Magnetic Characteristics
  
  

Specific Gravity
9.90  
99+
1.53  
99+

Magnetic Ordering
-  
Paramagnetic  

Permeability
0.00 H/m  
3
0.00 H/m  
11

Susceptibility
0.00  
24
0.00  
24

Electrical Properties
  
  

Electrical Property
-  
Conductor  

Resistivity
0.68 nΩ·m  
99+
128.00 nΩ·m  
26

Electrical Conductivity
0.00 106/cm Ω  
99+
0.08 106/cm Ω  
29

Electron Affinity
50.00 kJ/mol  
26
46.90 kJ/mol  
29

Thermal

Specific Heat
0.10 J/(kg K)  
99+
0.36 J/(kg K)  
17

Molar Heat Capacity
27.00 J/mol·K  
29
31.06 J/mol·K  
7

Thermal Conductivity
0.10 W/m·K  
99+
58.20 W/m·K  
26

Critical Temperature
1,100.00 K  
99+
2,093.00 K  
18

Thermal Expansion
11.00 µm/(m·K)  
99+
90.00 µm/(m·K)  
2

Enthalpy
  
  

Enthalpy of Vaporization
-  
69.20 kJ/mol  
99+

Enthalpy of Fusion
-  
2.19 kJ/mol  
99+

Enthalpy of Atomization
390.40 kJ/mol  
30
82.00 kJ/mol  
99+

Standard Molar Entropy
63.00 J/mol.K  
24
76.80 J/mol.K  
5

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