Francium

Magnesium

Francium vs Magnesium

Francium

Magnesium

Add ⊕

1 Periodic Table

1.1 Symbol

1.2 Group Number

0 17

1.3 Period Number

2 7

1.4 Block

s block

1.5 Element Family

Alkali

Alkaline Earth

1.6 CAS Number

74407357439954

7429905 54386242

1.7 Space Group Name

Not Available

P63/mmc

1.8 Space Group Number

NA194.00

11 229

2 Facts

2.1 Interesting Facts

223 Francium has the longest half life at 21.8.
Francium metal is produced by alpha decay in ²²⁷Actinium 227.

Magnesium ions are present in every chlorophyll of every green plant .
Controlling Magnesium fire by pouring water on it will result in explosions.

2.2 Sources

Formed by Decay Process, Mining

By Electrolysis Process, In Ocean, Mining

2.3 History

2.3.1 Who Discovered

Marguerite Perey

Joseph Black

2.3.2 Discovery

In 1939

In 1755

2.4 Abundance

2.4.1 Abundance In Universe

NA6 * 10^-2 %

5E-09 0.11

2.4.2 Abundance In Sun

~-9999 %~0.07 %

1E-08 0.1

2.4.3 Abundance In Meteorites

NA12.00 %

1.7E-07 22

2.4.4 Abundance In Earth's Crust

NA2.90 %

9.9E-12 8.1

2.4.5 Abundance In Oceans

NA0.13 %

2E-23 1.1

2.4.6 Abundance In Humans

NA0.03 %

1E-13 1.4

3 Uses

3.1 Uses & Benefits

Francium has no known uses as it has a half life of only 22 minutes.

Magnesium aluminum alloy improves the mechanical strength and welding characteristics and hence it is used in aeroplane and car manufacturing.
It is also used to remove sulfur from the molten iron and steel.

3.1.1 Industrial Uses

Aerospace Industry, Ammunition Industry, Automobile Industry, Chemical Industry, Pharmaceutical Industry

3.1.2 Medical Uses

3.1.3 Other Uses

Surgical Instruments Manufacturing

3.2 Biological Properties

3.2.1 Toxicity

Non Toxic

3.2.2 Present in Human Body

✔ ✘

3.2.3 In Blood

0.00 Blood/mg dm-337.80 Blood/mg dm-3

0 1970

3.2.4 In Bone

0.00 p.p.m.1,800.00 p.p.m.

0 170000

4 Physical

4.1 Melting Point

27.00 °C650.00 °C

27 3410

4.2 Boiling Point

677.00 °C1,107.00 °C

147 5660

4.3 Appearance

4.3.1 Physical State

Solid

4.3.2 Color

Gray

4.3.3 Luster

4.4 Hardness

4.4.1 Mohs Hardness

NA2.50

0.2 8.5

4.4.2 Brinell Hardness

NA260.00 MPa

0.14 3490

4.4.3 Vickers Hardness

NANA

121 3430

4.5 Speed of Sound

NA4,940.00 m/s

818 16200

4.6 Optical Properties

4.6.1 Refractive Index

NANA

1.000933 1.7229

4.6.2 Reflectivity

NA74.00 %

58 97

4.7 Allotropes

✔ ✘

4.7.1 α Allotropes

Not Available

4.7.2 β Allotropes

Not Available

4.7.3 γ Allotropes

Not Available

5 Chemical

5.1 Chemical Formula

5.2 Isotopes

5.2.1 Known Isotopes

3315

0 38

5.3 Electronegativity

5.3.1 Pauling Electronegativity

0.701.31

0.7 2.54

5.3.2 Sanderson Electronegativity

NA1.32

0.22 2.56

5.3.3 Allred Rochow Electronegativity

0.861.23

0.86 1.82

5.3.4 Mulliken-Jaffe Electronegativity

0.681.37

0.62 2.48

5.3.5 Allen Electronegativity

0.671.29

0.659 2.7

5.4 Electropositivity

5.4.1 Pauling Electropositivity

3.302.69

1.46 3.3

5.5 Ionization Energies

5.5.1 1st Energy Level

380.00 kJ/mol737.70 kJ/mol

375.7 26130

5.5.2 2nd Energy Level

NA1,450.70 kJ/mol

710.2162 28750

5.5.3 3rd Energy Level

NA7,732.70 kJ/mol

1600 34230

5.5.4 4th Energy Level

NA10,542.50 kJ/mol

2780 37066

5.5.5 5th Energy Level

NA13,630.00 kJ/mol

4305.2 97510

5.5.6 6th Energy Level

NA18,020.00 kJ/mol

5715.8 105800

5.5.7 7th Energy level

NA21,711.00 kJ/mol

7226.8 114300

5.5.8 8th Energy Level

NA25,661.00 kJ/mol

8857.4 125300

5.5.9 9th Energy Level

NA31,653.00 kJ/mol

14110 134700

5.5.10 10th Energy Level

NA35,458.00 kJ/mol

17100 144300

5.5.11 11th Energy Level

NA169,988.00 kJ/mol

19900 169988

5.5.12 12th Energy Level

NA189,368.00 kJ/mol

22219 189368

5.5.13 13th Energy Level

NANA

26930 76015

5.5.14 14th Energy Level

NANA

29196 86450

5.5.15 15th Energy Level

NANA

41987 97510

5.5.16 16th Energy Level

NANA

47206 109480

5.5.17 17th Energy Level

NANA

52737 122200

5.5.18 18th Energy Level

NANA

58570 134810

5.5.19 19th Energy Level

NANA

64702 148700

5.5.20 20th Energy Level

NANA

80400 171200

5.5.21 21st Energy Level

NANA

87000 179100

5.5.22 22nd Energy Level

NANA

93400 184900

5.5.23 23rd Energy Level

NANA

98420 198800

5.5.24 24th Energy Level

NANA

104400 195200

5.5.25 25th Energy Level

NANA

121900 121900

5.5.26 26th Energy Level

NANA

127700 127700

5.5.27 27th Energy Level

NANA

133800 133800

5.5.28 28th Energy Level

NANA

139800 139800

5.5.29 29th Energy Level

NANA

148100 148100

5.5.30 30th Energy Level

NANA

154500 154500

5.6 Electrochemical Equivalent

8.32 g/amp-hr0.45 g/amp-hr

0.16812 8.3209

5.7 Electron Work Function

NA3.66 eV

2.14 5.65

5.8 Other Chemical Properties

Ionization, Radioactive Isotopes, Radioactivity, Solubility

Corrosion, Highly Inflammable, Ionization, Solubility

6 Atomic

6.1 Atomic Number

8712

3 117

6.2 Electron Configuration

[Rn] 7s¹

[Ne] 3s²

6.3 Crystal Structure

Body Centered Cubic (BCC)

Hexagonal Close Packed (HCP)

6.3.1 Crystal Lattice

6.4 Atom

6.4.1 Number of Protons

8712

3 117

6.4.2 Number of Neutrons

13612

4 184

6.4.3 Number of Electrons

8712

3 117

6.5 Radius of an Atom

6.5.1 Atomic Radius

NA160.00 pm

112 265

6.5.2 Covalent Radius

260.00 pm141.00 pm

96 260

6.5.3 Van der Waals Radius

348.00 pm173.00 pm

139 348

6.6 Atomic Weight

223.00 amu24.31 amu

6.94 294

6.7 Atomic Volume

NA13.97 cm3/mol

1.39 71.07

6.8 Adjacent Atomic Numbers

6.8.1 Previous Element

6.8.2 Next Element

6.9 Valence Electron Potential

8.00 (-eV)40.00 (-eV)

8 392.42

6.10 Lattice Constant

NA320.94 pm

228.58 891.25

6.11 Lattice Angles

π/2, π/2, 2 π/3

6.12 Lattice C/A Ratio

NANA

1.567 1.886

7 Mechanical

7.1 Density

7.1.1 Density At Room Temperature

1.87 g/cm³1.74 g/cm³

0.534 40.7

7.1.2 Density When Liquid (at m.p.)

NA1.58 g/cm3

0.512 20

7.2 Tensile Strength

NANA

2.5 11000

7.3 Viscosity

NANA

0.001526 0.001526

7.4 Vapor Pressure

7.4.1 Vapor Pressure at 1000 K

NANA

2.47E-11 121

7.4.2 Vapor Pressure at 2000 K

NANA

2.62E-10 774

7.5 Elasticity properties

7.5.1 Shear Modulus

NA17.00 GPa

1.3 222

7.5.2 Bulk Modulus

NA45.00 GPa

1.6 462

7.5.3 Young's Modulus

NA45.00 GPa

1.7 528

7.6 Poisson Ratio

NA0.29

0.032 0.47

7.7 Other Mechanical Properties

8 Magnetic

8.1 Magnetic Characteristics

8.1.1 Specific Gravity

NA1.74

0.53 4500

8.1.2 Magnetic Ordering

Paramagnetic

8.1.3 Permeability

NANA

1.25643E-06 0.0063

8.1.4 Susceptibility

NANA

-0.000166 200000

8.2 Electrical Properties

8.2.1 Electrical Property

Poor Conductor

Conductor

8.2.2 Resistivity

3.00 nΩ·m43.90 nΩ·m

0.18 961

8.2.3 Electrical Conductivity

0.03 10⁶/cm Ω0.23 10⁶/cm Ω

0.00666 0.63

8.2.4 Electron Affinity

NA0.00 kJ/mol

0 222.8

9 Thermal

9.1 Specific Heat

NA1.02 J/(kg K)

0.11 3.6

9.2 Molar Heat Capacity

NA24.87 J/mol·K

16.443 62.7

9.3 Thermal Conductivity

15.00 W/m·K156.00 W/m·K

6.3 429

9.4 Critical Temperature

NANA

26.3 3223

9.5 Thermal Expansion

NA24.80 µm/(m·K)

4.5 97

9.6 Enthalpy

9.6.1 Enthalpy of Vaporization

NA128.70 kJ/mol

7.32 799.1

9.6.2 Enthalpy of Fusion

NA8.95 kJ/mol

2.1 35.23

9.6.3 Enthalpy of Atomization

71.00 kJ/mol148.50 kJ/mol

61.5 837

9.7 Standard Molar Entropy

NA32.70 J/mol.K

9.5 198.1

Compare All Metals

Francium vs Neptunium

Francium vs Actinium

Francium vs Einsteinium

All Metals