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Mercury vs Strontium

Mercury
Strontium
Strontium vs Mercury


Periodic Table
Symbol
Hg  
Sr  
Group Number
12  
6
2  
16
Period Number
6  
5  
Block
d block  
s block  
Element Family
Transition Metal  
Alkaline Earth  
CAS Number
7439976  
99+
7440246  
99+
Space Group Name
R_ 3m  
Fm_ 3m  
Space Group Number
166.00  
9
225.00  
3
Facts
Interesting Facts
  • At room temperature mercury is found in a liquid state.
  • A coin of pound or rupees floats in mercury.
  • Because of its low melting point and boiling point it is used in thermometers.
  
  • Strontium element is softer than Calcium.
  • Silvery Strontium turns yellow, if exposed to air.
  
Sources
Mining, Ores of Minerals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Ancient Chinese and Indians  
William Cruickshank  
Discovery
Before 2000 BCE  
In 1787  
Abundance
  
  
Abundance In Universe
0.09 %  
2
0.00 %  
15
Abundance In Sun
0.00 %  
30
0.00 %  
15
Abundance In Meteorites
0.00 %  
99+
0.00 %  
15
Abundance In Earth's Crust
0.05 %  
9
0.04 %  
10
Abundance In Oceans
-  
0.00 %  
4
Abundance In Humans
0.00 %  
24
0.00 %  
8
Uses
Uses & Benefits
  • It is a liquid metal at room temperature, but it is a toxic heavy metal and hence many uses of mercury are under review or phased out.
  • It is manly used as a catalysts in chemical industry.
  
  • Strontium metal is used to producing ferrite magnets as well as refining zinc.
  • By-product of nuclear reactors called Strontium-90 is a radioactive isotope; it is absorbed by tissues and destroys bone marrow and cancer growth.
  
Industrial Uses
Electrical Industry, Electronic Industry  
Ammunition Industry, Chemical Industry  
Medical Uses
Dentistry  
-  
Other Uses
Alloys, Mirror Manufacturing, Pharmaceutical Industry  
Alloys  
Biological Properties
  
  
Toxicity
Highly Toxic  
Non Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.01 Blood/mg dm-3  
23
0.03 Blood/mg dm-3  
19
In Bone
0.45 p.p.m.  
23
140.00 p.p.m.  
7
Physical
Melting Point
-38.83 °C  
99+
769.00 °C  
99+
Boiling Point
356.58 °C  
99+
1,384.00 °C  
99+
Appearance
  
  
Physical State
Liquid  
Solid  
Color
Silver  
Silvery White  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
1.50  
19
1.50  
19
Brinell Hardness
5.00 MPa  
99+
110.00 MPa  
99+
Vickers Hardness
0.00 MPa  
99+
15.00 MPa  
99+
Speed of Sound
1,451.40 m/s  
99+
4,170.00 m/s  
23
Optical Properties
  
  
Refractive Index
1.00  
99+
1.43  
39
Reflectivity
73.00 %  
10
65.00 %  
18
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Hg  
Sr  
Isotopes
  
  
Known Isotopes
34  
5
27  
12
Electronegativity
  
  
Pauling Electronegativity
2.00  
8
0.95  
99+
Sanderson Electronegativity
2.20  
8
0.72  
99+
Allred Rochow Electronegativity
1.44  
18
0.99  
38
Mulliken-Jaffe Electronegativity
1.81  
17
1.00  
99+
Allen Electronegativity
1.44  
34
0.96  
99+
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
3.05  
7
Ionization Energies
  
  
1st Energy Level
1,007.10 kJ/mol  
4
549.50 kJ/mol  
99+
2nd Energy Level
1,810.00 kJ/mol  
21
1,064.20 kJ/mol  
99+
3rd Energy Level
3,300.00 kJ/mol  
20
4,138.00 kJ/mol  
10
4th Energy Level
1,007.10 kJ/mol  
99+
5,500.00 kJ/mol  
22
5th Energy Level
1,007.00 kJ/mol  
99+
6,910.00 kJ/mol  
30
6th Energy Level
1,007.00 kJ/mol  
99+
8,760.00 kJ/mol  
26
7th Energy level
1,007.00 kJ/mol  
99+
10,230.00 kJ/mol  
19
8th Energy Level
1,007.00 kJ/mol  
99+
11,800.00 kJ/mol  
19
9th Energy Level
1,007.00 kJ/mol  
99+
15,600.00 kJ/mol  
17
10th Energy Level
1,007.00 kJ/mol  
99+
17,100.00 kJ/mol  
19
11th Energy Level
1,007.00 kJ/mol  
99+
31,270.00 kJ/mol  
6
12th Energy Level
1,007.00 kJ/mol  
99+
5,490.00 kJ/mol  
99+
13th Energy Level
1,007.00 kJ/mol  
99+
5,490.00 kJ/mol  
99+
14th Energy Level
1,007.00 kJ/mol  
99+
5,490.00 kJ/mol  
99+
15th Energy Level
100,700.00 kJ/mol  
1
54,900.00 kJ/mol  
99+
16th Energy Level
1,007.00 kJ/mol  
99+
54,900.00 kJ/mol  
99+
17th Energy Level
1,007.00 kJ/mol  
24
549.50 kJ/mol  
99+
18th Energy Level
1,007.00 kJ/mol  
99+
5,490.00 kJ/mol  
99+
19th Energy Level
1,007.10 kJ/mol  
20
549.50 kJ/mol  
99+
20th Energy Level
1,007.00 kJ/mol  
11
549.00 kJ/mol  
99+
21st Energy Level
1,007.00 kJ/mol  
33
549.50 kJ/mol  
99+
22nd Energy Level
1,007.00 kJ/mol  
8
549.00 kJ/mol  
99+
23rd Energy Level
1,007.00 kJ/mol  
36
549.50 kJ/mol  
99+
24th Energy Level
1,007.10 kJ/mol  
3
549.50 kJ/mol  
99+
25th Energy Level
1,007.10 kJ/mol  
3
549.00 kJ/mol  
99+
26th Energy Level
1,007.10 kJ/mol  
3
549.50 kJ/mol  
99+
27th Energy Level
1,007.10 kJ/mol  
2
549.50 kJ/mol  
99+
28th Energy Level
1,007.10 kJ/mol  
5
549.50 kJ/mol  
99+
29th Energy Level
1,007.10 kJ/mol  
6
549.50 kJ/mol  
99+
30th Energy Level
1,007.10 kJ/mol  
3
549.50 kJ/mol  
99+
Electrochemical Equivalent
3.74 g/amp-hr  
10
1.64 g/amp-hr  
99+
Electron Work Function
4.49 eV  
20
2.59 eV  
99+
Other Chemical Properties
Flammability, Ionization, Solubility  
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Atomic
Atomic Number
80  
36
38  
99+
Electron Configuration
[Xe] 4f14 5d10 6s2  
[Kr] 5s2  
Crystal Structure
Rhombohedral (RHO)  
Face Centered Cubic (FCC)  
Crystal Lattice
RHO-Crystal-Structure-of-Mercury.jpg#100  
FCC-Crystal-Structure-of-Strontium.jpg#100  
Atom
  
  
Number of Protons
80  
36
38  
99+
Number of Neutrons
121  
23
50  
99+
Number of Electrons
80  
36
38  
99+
Radius of an Atom
  
  
Atomic Radius
151.00 pm  
34
215.00 pm  
6
Covalent Radius
132.00 pm  
99+
195.00 pm  
15
Van der Waals Radius
155.00 pm  
99+
249.00 pm  
11
Atomic Weight
200.59 amu  
32
87.62 amu  
99+
Atomic Volume
14.82 cm3/mol  
99+
33.70 cm3/mol  
9
Adjacent Atomic Numbers
  
  
Previous Element
Gold
  
Rubidium
  
Next Element
Thallium
  
Yttrium
  
Valence Electron Potential
28.20 (-eV)  
99+
25.70 (-eV)  
99+
Lattice Constant
300.50 pm  
99+
608.49 pm  
6
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
0.42  
99+
1.57  
40
Mechanical
Density
  
  
Density At Room Temperature
13.53 g/cm3  
25
2.64 g/cm3  
99+
Density When Liquid (at m.p.)
13.55 g/cm3  
27
2.38 g/cm3  
99+
Tensile Strength
15.00 MPa  
99+
170.00 MPa  
21
Viscosity
0.00  
4
0.00  
2
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
121.00 (Pa)  
1
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.00 (Pa)  
38
Elasticity properties
  
  
Shear Modulus
30.00 GPa  
27
6.03 GPa  
99+
Bulk Modulus
25.00 GPa  
99+
11.00 GPa  
99+
Young's Modulus
45.00 GPa  
99+
15.70 GPa  
99+
Poisson Ratio
0.44  
3
0.28  
17
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
13.53  
27
2.64  
99+
Magnetic Ordering
Diamagnetic  
Paramagnetic  
Permeability
0.00 H/m  
10
0.00 H/m  
17
Susceptibility
0.00  
20
0.00  
35
Electrical Properties
  
  
Electrical Property
Conductor  
-  
Resistivity
961.00 nΩ·m  
1
132.00 nΩ·m  
24
Electrical Conductivity
0.01 106/cm Ω  
99+
0.08 106/cm Ω  
31
Electron Affinity
0.00 kJ/mol  
99+
5.03 kJ/mol  
99+
Thermal
Specific Heat
0.14 J/(kg K)  
39
0.30 J/(kg K)  
18
Molar Heat Capacity
27.98 J/mol·K  
16
26.40 J/mol·K  
36
Thermal Conductivity
8.30 W/m·K  
99+
35.40 W/m·K  
38
Critical Temperature
1,750.00 K  
33
1,050.00 K  
99+
Thermal Expansion
60.40 µm/(m·K)  
5
22.50 µm/(m·K)  
19
Enthalpy
  
  
Enthalpy of Vaporization
56.90 kJ/mol  
99+
150.00 kJ/mol  
99+
Enthalpy of Fusion
2.29 kJ/mol  
99+
9.16 kJ/mol  
99+
Enthalpy of Atomization
61.50 kJ/mol  
99+
163.20 kJ/mol  
99+
Standard Molar Entropy
75.80 J/mol.K  
6
55.00 J/mol.K  
34
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