Francium

Gallium

Francium Gallium Comparison

Francium

Gallium

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1 Periodic Table

1.1 Symbol

1.2 Group Number

113

0 17

1.4 Period Number

2 7

1.5 Block

s block

p block

1.6 Element Family

Alkali

Post-Transition

1.7 CAS Number

74407357440553

7429905 54386242

1.8 Space Group Name

Not Available

Cmca

1.9 Space Group Number

NA64.00

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.

A gram of Gallium metal can be bought for only three dollars.
Gallium metal found in ores of following things Coal, Bauxite, Diaspore, Sphalerite, Germanite and Zinc.

2.2 Sources

Formed by Decay Process, Mining

Earth's crust, Found in Minerals, Mining, Ores of Minerals

2.3 History

2.3.1 Who Discovered

Marguerite Perey

Lecoq de Boisbaudran

2.3.2 Discovery

In 1939

In 1875

2.4 Abundance

2.4.1 Abundance In Universe

NA1 * 10^-6 %

5E-09 0.11

2.5.1 Abundance In Sun

~-9999 %~0.000004 %

1E-08 0.1

3.1.2 Abundance In Meteorites

NA0.00 %

1.7E-07 22

3.1.5 Abundance In Earth's Crust

NA0.00 %

9.9E-12 8.1

3.1.7 Abundance In Oceans

NA0.00 %

2E-23 1.1

3.2.3 Abundance In Humans

NANA

1E-13 1.4

4 Uses

4.1 Uses & Benefits

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

Gallium arsenide is a very important component of many semiconductors and led manufacturing.

Gallium nitride is also know as a semiconductor and it is used in Blu-ray technology, mobile smartphones and LED.

4.1.1 Industrial Uses

Electrical Industry, Electronic Industry

4.1.2 Medical Uses

Surgical Instruments Manufacturing

4.1.4 Other Uses

Alloys

4.2 Biological Properties

4.2.1 Toxicity

Non Toxic

4.2.2 Present in Human Body

✔ ✘

4.2.3 In Blood

0.00 Blood/mg dm-30.08 Blood/mg dm-3

0 1970

4.2.4 In Bone

0.00 p.p.m.NA

0 170000

5 Physical

5.1 Melting Point

27.00 °C29.78 °C

27 3410

5.2 Boiling Point

677.00 °C2,403.00 °C

147 5660

6.2 Appearance

6.2.1 Physical State

Solid

6.2.2 Color

Silvery White

6.2.3 Luster

Metallic

6.3 Hardness

6.3.1 Mohs Hardness

NA1.50

0.2 8.5

6.4.1 Brinell Hardness

NA56.80 MPa

0.14 3490

6.5.1 Vickers Hardness

NANA

121 3430

6.7 Speed of Sound

NA2,740.00 m/s

818 16200

6.9 Optical Properties

6.9.1 Refractive Index

NANA

1.000933 1.7229

6.9.2 Reflectivity

NANA

58 97

6.11 Allotropes

✔ ✘

6.11.1 α Allotropes

Not Available

6.11.2 β Allotropes

Not Available

6.11.3 γ Allotropes

Not Available

7 Chemical

7.1 Chemical Formula

7.2 Isotopes

7.2.1 Known Isotopes

3324

0 38

7.3 Electronegativity

7.3.1 Pauling Electronegativity

0.701.81

0.7 2.54

7.3.2 Sanderson Electronegativity

NA2.42

0.22 2.56

7.3.4 Allred Rochow Electronegativity

0.861.82

0.86 1.82

7.3.5 Mulliken-Jaffe Electronegativity

0.682.01

0.62 2.48

7.4.1 Allen Electronegativity

0.671.76

0.659 2.7

7.5 Electropositivity

7.5.1 Pauling Electropositivity

3.302.19

1.46 3.3

7.6 Ionization Energies

7.6.1 1st Energy Level

380.00 kJ/mol578.80 kJ/mol

375.7 26130

7.6.2 2nd Energy Level

NA1,979.30 kJ/mol

710.2162 28750

7.6.3 3rd Energy Level

NA2,963.00 kJ/mol

1600 34230

7.6.4 4th Energy Level

NA6,180.00 kJ/mol

2780 37066

7.6.5 5th Energy Level

NANA

4305.2 97510

7.6.6 6th Energy Level

NANA

5715.8 105800

7.6.7 7th Energy level

NANA

7226.8 114300

7.6.8 8th Energy Level

NANA

8857.4 125300

7.6.9 9th Energy Level

NANA

14110 134700

7.6.10 10th Energy Level

NANA

17100 144300

7.6.11 11th Energy Level

NANA

19900 169988

7.6.12 12th Energy Level

NANA

22219 189368

7.6.13 13th Energy Level

NANA

26930 76015

7.6.14 14th Energy Level

NANA

29196 86450

7.6.15 15th Energy Level

NANA

41987 97510

7.6.16 16th Energy Level

NANA

47206 109480

7.6.17 17th Energy Level

NANA

52737 122200

7.6.18 18th Energy Level

NANA

58570 134810

7.6.19 19th Energy Level

NANA

64702 148700

7.6.20 20th Energy Level

NANA

80400 171200

7.6.21 21st Energy Level

NANA

87000 179100

7.6.22 22nd Energy Level

NANA

93400 184900

7.6.23 23rd Energy Level

NANA

98420 198800

7.6.24 24th Energy Level

NANA

104400 195200

7.6.25 25th Energy Level

NANA

121900 121900

7.6.26 26th Energy Level

NANA

127700 127700

7.6.27 27th Energy Level

NANA

133800 133800

7.6.28 28th Energy Level

NANA

139800 139800

7.6.29 29th Energy Level

NANA

148100 148100

7.6.30 30th Energy Level

NANA

154500 154500

7.7 Electrochemical Equivalent

8.32 g/amp-hr0.87 g/amp-hr

0.16812 8.3209

7.8 Electron Work Function

NA4.20 eV

2.14 5.65

7.9 Other Chemical Properties

Ionization, Radioactive Isotopes, Radioactivity, Solubility

Ionization, Radioactive Isotopes

8 Atomic

8.1 Atomic Number

8731

3 117

8.2 Electron Configuration

[Rn] 7s¹

[Ar] 3d¹⁰ 4s² 4p¹

8.3 Crystal Structure

Body Centered Cubic (BCC)

Orthorhombic (ORTH)

8.3.1 Crystal Lattice

8.4 Atom

8.4.1 Number of Protons

8731

3 117

8.4.2 Number of Neutrons

13639

4 184

8.4.3 Number of Electrons

8731

3 117

8.5 Radius of an Atom

8.5.1 Atomic Radius

NA135.00 pm

112 265

8.5.2 Covalent Radius

260.00 pm122.00 pm

96 260

8.5.3 Van der Waals Radius

348.00 pm187.00 pm

139 348

8.6 Atomic Weight

223.00 amu69.72 amu

6.94 294

8.7 Atomic Volume

NA11.80 cm3/mol

1.39 71.07

8.8 Adjacent Atomic Numbers

8.8.1 Previous Element

8.8.2 Next Element

8.9 Valence Electron Potential

8.00 (-eV)69.70 (-eV)

8 392.42

8.10 Lattice Constant

NA451.97 pm

228.58 891.25

8.11 Lattice Angles

π/2, π/2, π/2

8.12 Lattice C/A Ratio

NANA

1.567 1.886

9 Mechanical

9.1 Density

9.1.1 Density At Room Temperature

1.87 g/cm³5.91 g/cm³

0.534 40.7

9.1.2 Density When Liquid (at m.p.)

NA6.10 g/cm3

0.512 20

9.2 Tensile Strength

NANA

2.5 11000

9.3 Viscosity

NANA

0.001526 0.001526

9.4 Vapor Pressure

9.4.1 Vapor Pressure at 1000 K

NA0.00 (Pa)

2.47E-11 121

9.4.2 Vapor Pressure at 2000 K

NANA

2.62E-10 774

9.5 Elasticity properties

9.5.1 Shear Modulus

NANA

1.3 222

9.5.2 Bulk Modulus

NANA

1.6 462

9.5.3 Young's Modulus

NA9.80 GPa

1.7 528

9.6 Poisson Ratio

NA0.47

0.032 0.47

9.7 Other Mechanical Properties

10 Magnetic

10.1 Magnetic Characteristics

10.1.1 Specific Gravity

NA5.91

0.53 4500

10.1.2 Magnetic Ordering

Paramagnetic

Diamagnetic

10.1.3 Permeability

NANA

1.25643E-06 0.0063

10.1.4 Susceptibility

NANA

-0.000166 200000

10.2 Electrical Properties

10.2.1 Electrical Property

Poor Conductor

Semiconductor

10.2.2 Resistivity

3.00 nΩ·m270.00 nΩ·m

0.18 961

10.2.3 Electrical Conductivity

0.03 10⁶/cm Ω0.07 10⁶/cm Ω

0.00666 0.63

10.2.4 Electron Affinity

NA28.90 kJ/mol

0 222.8

11 Thermal

11.1 Specific Heat

NA0.37 J/(kg K)

0.11 3.6

11.2 Molar Heat Capacity

NA25.86 J/mol·K

16.443 62.7

11.3 Thermal Conductivity

15.00 W/m·K40.60 W/m·K

6.3 429

11.4 Critical Temperature

NANA

26.3 3223

11.5 Thermal Expansion

NA18.00 µm/(m·K)

4.5 97

11.6 Enthalpy

11.6.1 Enthalpy of Vaporization

NA256.10 kJ/mol

7.32 799.1

11.6.2 Enthalpy of Fusion

NA5.59 kJ/mol

2.1 35.23

11.6.3 Enthalpy of Atomization

71.00 kJ/mol276.10 kJ/mol

61.5 837

11.7 Standard Molar Entropy

NA40.80 J/mol.K

9.5 198.1

Compare All Metals

Francium vs Actinium

Francium vs Neptunium

Francium vs Einsteinium

All Metals