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Silver vs Strontium

Silver
Strontium
Strontium vs Silver


Periodic Table
Symbol
Ag  
Sr  
Group Number
11  
7
2  
16
Period Number
5  
5  
Block
d block  
s block  
Element Family
Transition Metal  
Alkaline Earth  
CAS Number
7440224  
99+
7440246  
99+
Space Group Name
Fm_ 3m  
Fm_ 3m  
Space Group Number
225.00  
3
225.00  
3
Facts
Interesting Facts
  • It is the most reflective element.
  • Silver is the second most ductile metal after Gold.
  • It is also used in Dentistry as a dental alloys for clips and crowning.
  
  • Strontium element is softer than Calcium.
  • Silvery Strontium turns yellow, if exposed to air.
  
Sources
Earth's crust, Found in Minerals, Ores of metals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
-  
William Cruickshank  
Discovery
Before 5000 BC  
In 1787  
Abundance
  
  
Abundance In Universe
0.00 %  
27
0.00 %  
15
Abundance In Sun
0.00 %  
26
0.00 %  
15
Abundance In Meteorites
0.00 %  
38
0.00 %  
15
Abundance In Earth's Crust
0.00 %  
99+
0.04 %  
10
Abundance In Oceans
0.00 %  
19
0.00 %  
4
Abundance In Humans
0.00 %  
24
0.00 %  
8
Uses
Uses & Benefits
  • Silver is mainly used for Jewelry and show piece.
  • It is used for manufacturing high quality mirrors due to its reflectivity property.
  
  • 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
Chemical Industry, Clothing Industry, Electrical Industry  
Ammunition Industry, Chemical Industry  
Medical Uses
Dentistry, Pharmaceutical Industry  
-  
Other Uses
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Alloys  
Biological Properties
  
  
Toxicity
Non Toxic  
Non Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.00 Blood/mg dm-3  
29
0.03 Blood/mg dm-3  
19
In Bone
0.44 p.p.m.  
24
140.00 p.p.m.  
7
Physical
Melting Point
961.93 °C  
99+
769.00 °C  
99+
Boiling Point
2,212.00 °C  
99+
1,384.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery White  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
2.50  
15
1.50  
19
Brinell Hardness
251.00 MPa  
99+
110.00 MPa  
99+
Vickers Hardness
229.00 MPa  
99+
15.00 MPa  
99+
Speed of Sound
2,680.00 m/s  
99+
4,170.00 m/s  
23
Optical Properties
  
  
Refractive Index
0.16  
99+
1.43  
39
Reflectivity
97.00 %  
1
65.00 %  
18
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ag  
Sr  
Isotopes
  
  
Known Isotopes
36  
3
27  
12
Electronegativity
  
  
Pauling Electronegativity
1.93  
10
0.95  
99+
Sanderson Electronegativity
1.83  
14
0.72  
99+
Allred Rochow Electronegativity
1.42  
19
0.99  
38
Mulliken-Jaffe Electronegativity
1.47  
28
1.00  
99+
Allen Electronegativity
1.87  
10
0.96  
99+
Electropositivity
  
  
Pauling Electropositivity
2.07  
99+
3.05  
7
Ionization Energies
  
  
1st Energy Level
731.00 kJ/mol  
27
549.50 kJ/mol  
99+
2nd Energy Level
2,070.00 kJ/mol  
11
1,064.20 kJ/mol  
99+
3rd Energy Level
3,361.00 kJ/mol  
19
4,138.00 kJ/mol  
10
4th Energy Level
7,310.00 kJ/mol  
10
5,500.00 kJ/mol  
22
5th Energy Level
7,310.00 kJ/mol  
24
6,910.00 kJ/mol  
30
6th Energy Level
7,310.00 kJ/mol  
39
8,760.00 kJ/mol  
26
7th Energy level
7,310.00 kJ/mol  
33
10,230.00 kJ/mol  
19
8th Energy Level
7,310.00 kJ/mol  
31
11,800.00 kJ/mol  
19
9th Energy Level
7,310.00 kJ/mol  
27
15,600.00 kJ/mol  
17
10th Energy Level
7,310.00 kJ/mol  
32
17,100.00 kJ/mol  
19
11th Energy Level
7,310.00 kJ/mol  
31
31,270.00 kJ/mol  
6
12th Energy Level
7,310.00 kJ/mol  
99+
5,490.00 kJ/mol  
99+
13th Energy Level
7,310.00 kJ/mol  
25
5,490.00 kJ/mol  
99+
14th Energy Level
731.00 kJ/mol  
99+
5,490.00 kJ/mol  
99+
15th Energy Level
73,100.00 kJ/mol  
22
54,900.00 kJ/mol  
99+
16th Energy Level
73,100.00 kJ/mol  
17
54,900.00 kJ/mol  
99+
17th Energy Level
731.00 kJ/mol  
38
549.50 kJ/mol  
99+
18th Energy Level
7,310.00 kJ/mol  
28
5,490.00 kJ/mol  
99+
19th Energy Level
731.00 kJ/mol  
35
549.50 kJ/mol  
99+
20th Energy Level
731.00 kJ/mol  
29
549.00 kJ/mol  
99+
21st Energy Level
731.00 kJ/mol  
99+
549.50 kJ/mol  
99+
22nd Energy Level
731.00 kJ/mol  
23
549.00 kJ/mol  
99+
23rd Energy Level
731.00 kJ/mol  
99+
549.50 kJ/mol  
99+
24th Energy Level
731.00 kJ/mol  
22
549.50 kJ/mol  
99+
25th Energy Level
731.00 kJ/mol  
22
549.00 kJ/mol  
99+
26th Energy Level
731.00 kJ/mol  
22
549.50 kJ/mol  
99+
27th Energy Level
731.00 kJ/mol  
21
549.50 kJ/mol  
99+
28th Energy Level
731.00 kJ/mol  
27
549.50 kJ/mol  
99+
29th Energy Level
731.00 kJ/mol  
28
549.50 kJ/mol  
99+
30th Energy Level
731.00 kJ/mol  
22
549.50 kJ/mol  
99+
Electrochemical Equivalent
4.02 g/amp-hr  
7
1.64 g/amp-hr  
99+
Electron Work Function
4.26 eV  
27
2.59 eV  
99+
Other Chemical Properties
Chemical Stability, Ionization, Solubility  
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Atomic
Atomic Number
47  
99+
38  
99+
Electron Configuration
[Kr] 4d10 5s1  
[Kr] 5s2  
Crystal Structure
Face Centered Cubic (FCC)  
Face Centered Cubic (FCC)  
Crystal Lattice
FCC-Crystal-Structure-of-Silver.jpg#100  
FCC-Crystal-Structure-of-Strontium.jpg#100  
Atom
  
  
Number of Protons
47  
99+
38  
99+
Number of Neutrons
61  
99+
50  
99+
Number of Electrons
47  
99+
38  
99+
Radius of an Atom
  
  
Atomic Radius
144.00 pm  
38
215.00 pm  
6
Covalent Radius
145.00 pm  
99+
195.00 pm  
15
Van der Waals Radius
172.00 pm  
99+
249.00 pm  
11
Atomic Weight
107.87 amu  
99+
87.62 amu  
99+
Atomic Volume
10.30 cm3/mol  
99+
33.70 cm3/mol  
9
Adjacent Atomic Numbers
  
  
Previous Element
Palladium
  
Rubidium
  
Next Element
Cadmium
  
Yttrium
  
Valence Electron Potential
11.40 (-eV)  
99+
25.70 (-eV)  
99+
Lattice Constant
408.53 pm  
23
608.49 pm  
6
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.59  
26
1.57  
40
Mechanical
Density
  
  
Density At Room Temperature
10.49 g/cm3  
37
2.64 g/cm3  
99+
Density When Liquid (at m.p.)
9.32 g/cm3  
99+
2.38 g/cm3  
99+
Tensile Strength
170.00 MPa  
21
170.00 MPa  
21
Viscosity
0.00  
23
0.00  
2
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
14
121.00 (Pa)  
1
Vapor Pressure at 2000 K
0.00 (Pa)  
38
0.00 (Pa)  
38
Elasticity properties
  
  
Shear Modulus
30.00 GPa  
27
6.03 GPa  
99+
Bulk Modulus
100.00 GPa  
16
11.00 GPa  
99+
Young's Modulus
83.00 GPa  
25
15.70 GPa  
99+
Poisson Ratio
0.37  
7
0.28  
17
Other Mechanical Properties
Ductile, Malleable  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
10.50  
39
2.64  
99+
Magnetic Ordering
Diamagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
17
Susceptibility
0.00  
32
0.00  
35
Electrical Properties
  
  
Electrical Property
Conductor  
-  
Resistivity
15.87 nΩ·m  
99+
132.00 nΩ·m  
24
Electrical Conductivity
0.63 106/cm Ω  
1
0.08 106/cm Ω  
31
Electron Affinity
125.60 kJ/mol  
5
5.03 kJ/mol  
99+
Thermal
Specific Heat
0.24 J/(kg K)  
25
0.30 J/(kg K)  
18
Molar Heat Capacity
25.35 J/mol·K  
99+
26.40 J/mol·K  
36
Thermal Conductivity
429.00 W/m·K  
1
35.40 W/m·K  
38
Critical Temperature
1,235.00 K  
99+
1,050.00 K  
99+
Thermal Expansion
18.90 µm/(m·K)  
25
22.50 µm/(m·K)  
19
Enthalpy
  
  
Enthalpy of Vaporization
255.10 kJ/mol  
99+
150.00 kJ/mol  
99+
Enthalpy of Fusion
11.30 kJ/mol  
37
9.16 kJ/mol  
99+
Enthalpy of Atomization
284.50 kJ/mol  
99+
163.20 kJ/mol  
99+
Standard Molar Entropy
42.60 J/mol.K  
99+
55.00 J/mol.K  
34
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