Roentgenium

Barium

Roentgenium Barium Comparison

Roentgenium

Barium

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1 Periodic Table

1.1 Symbol

1.2 Group Number

112

0 17

1.3 Period Number

2 7

1.4 Block

d block

s block

1.5 Element Family

Unknown

Alkaline Earth

1.6 CAS Number

543862427440393

7429905 54386242

1.7 Space Group Name

Not Available

Im_ 3m

1.8 Space Group Number

194.00229.00

11 229

2 Facts

2.1 Interesting Facts

Not Available

Barium oxidizes very easily in the air.

All toxic compounds of Barium can easily dissolve in water.

Barium carbonate is used to produce a Rat poison and its other compound Barium nitrate is used in fireworks to produce green color.

2.2 Sources

Synthetically Produced

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

2.3 History

2.3.1 Who Discovered

Gesellschaft für Schwerionenforschung

Carl Wilhelm Scheele

2.3.2 Discovery

In 1994

In 1772

2.4 Abundance

2.4.1 Abundance In Universe

NA1 * 10^-6 %

5E-09 0.11

2.4.2 Abundance In Sun

~-9999 %~0.000001 %

1E-08 0.1

2.4.3 Abundance In Meteorites

NA0.00 %

1.7E-07 22

2.4.4 Abundance In Earth's Crust

NA0.03 %

9.9E-12 8.1

2.4.5 Abundance In Oceans

NA0.00 %

2E-23 1.1

2.4.6 Abundance In Humans

NA0.00 %

1E-13 1.4

3 Uses

3.1 Uses & Benefits

Currently known uses of Roentgenium metal are limited to research purpose only.

It is sued in chemical paint manufacturing and glass manufacturing.
Compounds of this metal are toxic; but still the barium sulfate is insoluble and given to patients suffering from digestive disorder.

3.1.1 Industrial Uses

Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry

3.1.2 Medical Uses

3.1.3 Other Uses

Research Purposes

Alloys

3.2 Biological Properties

3.2.1 Toxicity

Unknown

Low Toxic

3.2.2 Present in Human Body

✔ ✘

3.2.3 In Blood

0.00 Blood/mg dm-30.07 Blood/mg dm-3

0 1970

3.2.4 In Bone

0.00 p.p.m.70.00 p.p.m.

0 170000

4 Physical

4.1 Melting Point

NA725.00 °C

27 3410

4.2 Boiling Point

NA1,140.00 °C

147 5660

4.3 Appearance

4.3.1 Physical State

Solid

4.3.2 Color

Silver

Silvery Gray

4.3.3 Luster

Unknown Luster

4.4 Hardness

4.4.1 Mohs Hardness

NA1.25

0.2 8.5

4.4.2 Brinell Hardness

NANA

0.14 3490

4.4.3 Vickers Hardness

NANA

121 3430

4.5 Speed of Sound

NA1,620.00 m/s

818 16200

4.6 Optical Properties

4.6.1 Refractive Index

NANA

1.000933 1.7229

4.6.2 Reflectivity

NANA

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

137

0 38

5.3 Electronegativity

5.3.1 Pauling Electronegativity

NA0.89

0.7 2.54

5.3.2 Sanderson Electronegativity

NA0.68

0.22 2.56

5.3.3 Allred Rochow Electronegativity

NA0.97

0.86 1.82

5.3.4 Mulliken-Jaffe Electronegativity

NA0.88

0.62 2.48

5.3.5 Allen Electronegativity

NA0.88

0.659 2.7

5.4 Electropositivity

5.4.1 Pauling Electropositivity

NA3.11

1.46 3.3

5.5 Ionization Energies

5.5.1 1st Energy Level

1,022.70 kJ/mol502.90 kJ/mol

375.7 26130

5.5.2 2nd Energy Level

2,074.40 kJ/mol965.20 kJ/mol

710.2162 28750

5.5.3 3rd Energy Level

3,077.90 kJ/mol3,600.00 kJ/mol

1600 34230

5.5.4 4th Energy Level

4,052.40 kJ/molNA

2780 37066

5.5.5 5th Energy Level

5,306.70 kJ/molNA

4305.2 97510

5.5.6 6th Energy Level

NANA

5715.8 105800

5.5.7 7th Energy level

NANA

7226.8 114300

5.5.8 8th Energy Level

NANA

8857.4 125300

5.5.9 9th Energy Level

NANA

14110 134700

5.5.10 10th Energy Level

NANA

17100 144300

5.5.11 11th Energy Level

NANA

19900 169988

5.5.12 12th Energy Level

NANA

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

NA2.56 g/amp-hr

0.16812 8.3209

5.7 Electron Work Function

NA2.70 eV

2.14 5.65

5.8 Other Chemical Properties

Ionization, Radioactive Isotopes, Radioactivity, Solubility

6 Atomic

6.1 Atomic Number

11156

3 117

6.2 Electron Configuration

[Rn] 5f¹⁴ 6d⁹ 7s²

[Xe] 6s²

6.3 Crystal Structure

Body Centered Cubic (BCC)

6.3.1 Crystal Lattice

6.4 Atom

6.4.1 Number of Protons

11156

3 117

6.4.2 Number of Neutrons

16181

4 184

6.4.3 Number of Electrons

11156

3 117

6.5 Radius of an Atom

6.5.1 Atomic Radius

NA222.00 pm

112 265

6.5.2 Covalent Radius

NA215.00 pm

96 260

6.5.3 Van der Waals Radius

NA268.00 pm

139 348

6.6 Atomic Weight

281.00 amu137.33 amu

6.94 294

6.7 Atomic Volume

NA39.24 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

NA21.30 (-eV)

8 392.42

6.10 Lattice Constant

NA502.80 pm

228.58 891.25

6.11 Lattice Angles

π/2, π/2, π/2

6.12 Lattice C/A Ratio

NANA

1.567 1.886

7 Mechanical

7.1 Density

7.1.1 Density At Room Temperature

28.70 g/cm³3.51 g/cm³

0.534 40.7

7.1.2 Density When Liquid (at m.p.)

NA3.34 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

NA7.11 (Pa)

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

NA4.90 GPa

1.3 222

7.5.2 Bulk Modulus

NA9.60 GPa

1.6 462

7.5.3 Young's Modulus

NA13.00 GPa

1.7 528

7.6 Poisson Ratio

NANA

0.032 0.47

7.7 Other Mechanical Properties

Unknown

8 Magnetic

8.1 Magnetic Characteristics

8.1.1 Specific Gravity

NA3.62

0.53 4500

8.1.2 Magnetic Ordering

Unknown

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

Unknown

Superconductor

8.2.2 Resistivity

NA332.00 nΩ·m

0.18 961

8.2.3 Electrical Conductivity

NA0.03 10⁶/cm Ω

0.00666 0.63

8.2.4 Electron Affinity

NA13.95 kJ/mol

0 222.8

9 Thermal

9.1 Specific Heat

NA0.20 J/(kg K)

0.11 3.6

9.2 Molar Heat Capacity

NA28.07 J/mol·K

16.443 62.7

9.3 Thermal Conductivity

NA18.40 W/m·K

6.3 429

9.4 Critical Temperature

NANA

26.3 3223

9.5 Thermal Expansion

NA20.60 µm/(m·K)

4.5 97

9.6 Enthalpy

9.6.1 Enthalpy of Vaporization

NA140.00 kJ/mol

7.32 799.1

9.6.2 Enthalpy of Fusion

NA7.66 kJ/mol

2.1 35.23

9.6.3 Enthalpy of Atomization

NA175.70 kJ/mol

61.5 837

9.7 Standard Molar Entropy

NA62.50 J/mol.K

9.5 198.1

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