Beryllium

Strontium

Beryllium vs Strontium

Beryllium

Strontium

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1 Periodic Table

1.1 Symbol

1.2 Group Number

0 17

1.4 Period Number

2 7

1.7 Block

s block

1.8 Element Family

Alkaline Earth

1.9 CAS Number

74404177440246

7429905 54386242

1.10 Space Group Name

P63/mmc

Fm_ 3m

1.12 Space Group Number

194.00225.00

11 229

2 Facts

2.1 Interesting Facts

Beryllium is best anti corrosion metal.

Beryllium is the lightest metal and still it is stronger than steel.

It also finds various applications in Nuclear reactors as a reflector.

Strontium element is softer than Calcium.
Silvery Strontium turns yellow, if exposed to air.

2.3 Sources

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

Found in Minerals, Mining, Ores of Minerals

2.4 History

2.4.1 Who Discovered

Louis Nicolas Vauquelin

William Cruickshank

2.4.2 Discovery

In 1797

In 1787

2.5 Abundance

2.5.1 Abundance In Universe

1 * 10^-7 %4 * 10^-6 %

5E-09 0.11

3.1.2 Abundance In Sun

~0.00000001 %~0.000005 %

1E-08 0.1

3.1.3 Abundance In Meteorites

0.00 %0.00 %

1.7E-07 22

3.1.5 Abundance In Earth's Crust

0.00 %0.04 %

9.9E-12 8.1

3.2.1 Abundance In Oceans

0.00 %0.00 %

2E-23 1.1

3.3.1 Abundance In Humans

0.00 %0.00 %

1E-13 1.4

4 Uses

4.1 Uses & Benefits

Its alloys with copper or nickel are used in manufacturing Gyroscopes, springs, electrical contact and non sparking tools.
Beryllium Alloys are used as a material for aircraft, missiles, spacecraft and satellite.

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.

4.1.1 Industrial Uses

Aerospace Industry, Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry

Ammunition Industry, Chemical Industry

4.1.2 Medical Uses

4.1.3 Other Uses

Alloys

4.2 Biological Properties

4.2.1 Toxicity

Toxic

Non Toxic

4.2.2 Present in Human Body

✔ ✘

4.2.3 In Blood

0.00 Blood/mg dm-30.03 Blood/mg dm-3

0 1970

4.2.5 In Bone

0.00 p.p.m.140.00 p.p.m.

0 170000

5 Physical

5.1 Melting Point

1,278.00 °C769.00 °C

27 3410

5.2 Boiling Point

2,970.00 °C1,384.00 °C

147 5660

5.3 Appearance

5.3.1 Physical State

Solid

5.3.2 Color

White Gray

Silvery White

5.3.3 Luster

Metallic

5.4 Hardness

5.4.1 Mohs Hardness

5.501.50

0.2 8.5

5.5.1 Brinell Hardness

590.00 MPaNA

0.14 3490

6.1.2 Vickers Hardness

1,670.00 MPaNA

121 3430

6.2 Speed of Sound

12,890.00 m/sNA

818 16200

6.3 Optical Properties

6.3.1 Refractive Index

NANA

1.000933 1.7229

6.3.2 Reflectivity

NANA

58 97

6.5 Allotropes

✔ ✘

6.5.1 α Allotropes

Not Available

6.5.2 β Allotropes

Not Available

6.5.3 γ Allotropes

Not Available

7 Chemical

7.1 Chemical Formula

7.2 Isotopes

7.2.1 Known Isotopes

927

0 38

7.3 Electronegativity

7.3.1 Pauling Electronegativity

1.570.95

0.7 2.54

7.3.3 Sanderson Electronegativity

1.810.72

0.22 2.56

7.3.4 Allred Rochow Electronegativity

1.470.99

0.86 1.82

8.1.1 Mulliken-Jaffe Electronegativity

1.541.00

0.62 2.48

8.2.1 Allen Electronegativity

1.580.96

0.659 2.7

8.4 Electropositivity

8.4.1 Pauling Electropositivity

2.433.05

1.46 3.3

8.5 Ionization Energies

8.5.1 1st Energy Level

899.50 kJ/mol549.50 kJ/mol

375.7 26130

8.6.1 2nd Energy Level

1,757.10 kJ/mol1,064.20 kJ/mol

710.2162 28750

8.6.2 3rd Energy Level

14,848.70 kJ/mol4,138.00 kJ/mol

1600 34230

8.7.1 4th Energy Level

21,006.60 kJ/mol5,500.00 kJ/mol

2780 37066

8.7.2 5th Energy Level

NA6,910.00 kJ/mol

4305.2 97510

8.7.3 6th Energy Level

NA8,760.00 kJ/mol

5715.8 105800

8.8.2 7th Energy level

NA10,230.00 kJ/mol

7226.8 114300

8.8.3 8th Energy Level

NA11,800.00 kJ/mol

8857.4 125300

8.8.4 9th Energy Level

NA15,600.00 kJ/mol

14110 134700

8.8.6 10th Energy Level

NA17,100.00 kJ/mol

17100 144300

8.8.7 11th Energy Level

NA31,270.00 kJ/mol

19900 169988

8.8.8 12th Energy Level

NANA

22219 189368

8.8.10 13th Energy Level

NANA

26930 76015

8.8.11 14th Energy Level

NANA

29196 86450

8.8.12 15th Energy Level

NANA

41987 97510

8.9.1 16th Energy Level

NANA

47206 109480

8.9.2 17th Energy Level

NANA

52737 122200

8.9.3 18th Energy Level

NANA

58570 134810

8.9.4 19th Energy Level

NANA

64702 148700

8.9.5 20th Energy Level

NANA

80400 171200

8.9.6 21st Energy Level

NANA

87000 179100

8.9.7 22nd Energy Level

NANA

93400 184900

8.9.8 23rd Energy Level

NANA

98420 198800

8.9.9 24th Energy Level

NANA

104400 195200

8.9.10 25th Energy Level

NANA

121900 121900

8.9.11 26th Energy Level

NANA

127700 127700

8.9.12 27th Energy Level

NANA

133800 133800

8.9.13 28th Energy Level

NANA

139800 139800

8.9.14 29th Energy Level

NANA

148100 148100

8.9.15 30th Energy Level

NANA

154500 154500

8.10 Electrochemical Equivalent

0.17 g/amp-hr1.64 g/amp-hr

0.16812 8.3209

8.11 Electron Work Function

4.98 eV2.59 eV

2.14 5.65

8.12 Other Chemical Properties

Corrosion, Ionization, Radioactive Isotopes

Ionization, Radioactive Isotopes, Radioactivity, Solubility

9 Atomic

9.1 Atomic Number

438

3 117

9.2 Electron Configuration

[He] 2s²

[Kr] 5s²

9.3 Crystal Structure

Hexagonal Close Packed (HCP)

Face Centered Cubic (FCC)

9.3.1 Crystal Lattice

9.4 Atom

9.4.1 Number of Protons

438

3 117

9.4.2 Number of Neutrons

550

4 184

9.4.3 Number of Electrons

438

3 117

9.5 Radius of an Atom

9.5.1 Atomic Radius

112.00 pm215.00 pm

112 265

9.5.2 Covalent Radius

96.00 pm195.00 pm

96 260

9.5.3 Van der Waals Radius

153.00 pm249.00 pm

139 348

9.6 Atomic Weight

9.01 amu87.62 amu

6.94 294

9.7 Atomic Volume

5.00 cm3/mol33.70 cm3/mol

1.39 71.07

9.8 Adjacent Atomic Numbers

9.8.1 Previous Element

9.8.2 Next Element

9.9 Valence Electron Potential

82.00 (-eV)25.70 (-eV)

8 392.42

9.10 Lattice Constant

228.58 pm608.49 pm

228.58 891.25

9.11 Lattice Angles

π/2, π/2, π/2

9.12 Lattice C/A Ratio

1.57NA

1.567 1.886

10 Mechanical

10.1 Density

10.1.1 Density At Room Temperature

1.85 g/cm³2.64 g/cm³

0.534 40.7

10.1.2 Density When Liquid (at m.p.)

1.69 g/cm32.38 g/cm3

0.512 20

10.2 Tensile Strength

NANA

2.5 11000

10.3 Viscosity

NANA

0.001526 0.001526

10.4 Vapor Pressure

10.4.1 Vapor Pressure at 1000 K

0.00 (Pa)121.00 (Pa)

2.47E-11 121

10.4.2 Vapor Pressure at 2000 K

NANA

2.62E-10 774

10.5 Elasticity properties

10.5.1 Shear Modulus

132.00 GPa6.03 GPa

1.3 222

10.5.2 Bulk Modulus

130.00 GPaNA

1.6 462

10.5.3 Young's Modulus

287.00 GPa15.70 GPa

1.7 528

10.6 Poisson Ratio

0.030.28

0.032 0.47

10.7 Other Mechanical Properties

11 Magnetic

11.1 Magnetic Characteristics

11.1.1 Specific Gravity

1.852.64

0.53 4500

11.1.2 Magnetic Ordering

Diamagnetic

Paramagnetic

11.1.3 Permeability

NANA

1.25643E-06 0.0063

11.1.4 Susceptibility

NANA

-0.000166 200000

11.2 Electrical Properties

11.2.1 Electrical Property

Semiconductor

11.2.2 Resistivity

36.00 nΩ·m132.00 nΩ·m

0.18 961

11.2.3 Electrical Conductivity

0.31 10⁶/cm Ω0.08 10⁶/cm Ω

0.00666 0.63

11.2.4 Electron Affinity

0.00 kJ/mol5.03 kJ/mol

0 222.8

12 Thermal

12.1 Specific Heat

1.82 J/(kg K)0.30 J/(kg K)

0.11 3.6

12.2 Molar Heat Capacity

16.44 J/mol·K26.40 J/mol·K

16.443 62.7

12.3 Thermal Conductivity

200.00 W/m·K35.40 W/m·K

6.3 429

12.4 Critical Temperature

NANA

26.3 3223

12.5 Thermal Expansion

11.30 µm/(m·K)22.50 µm/(m·K)

4.5 97

12.6 Enthalpy

12.6.1 Enthalpy of Vaporization

294.70 kJ/mol150.00 kJ/mol

7.32 799.1

12.6.2 Enthalpy of Fusion

11.72 kJ/mol9.16 kJ/mol

2.1 35.23

12.6.3 Enthalpy of Atomization

326.40 kJ/mol163.20 kJ/mol

61.5 837

12.7 Standard Molar Entropy

9.50 J/mol.K55.00 J/mol.K

9.5 198.1

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