Compare Fluorine vs Astatine: Periodic Table Element Comparison Table and Properties
Compare the elements Fluorine and Astatine on the basis of their properties, attributes and periodic table facts. Compare elements - Fluorine and Astatine comparison table side by side across over 90 properties. All the elements of similar categories show a lot of similarities and differences in their chemical, atomic, physical properties and uses. These similarities and dissimilarities should be known while we study periodic table elements. You can study the detailed comparison between Fluorine vs Astatine with most reliable information about their properties, attributes, facts, uses etc. You can compare F vs At on more than 90 properties like electronegativity, oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more. This in-depth comparison helps students, educators, researchers, and science enthusiasts understand the differences and similarities between Fluorine and Astatine.
Fluorine and Astatine Comparison
Here's a detailed comparison between Fluorine (F) and Astatine (At), focusing on their position in the periodic table, physical and chemical properties, stability, and uses.
Facts - Basic Element Details
| Name | Fluorine | Astatine |
|---|---|---|
| Atomic Number | 9 | 85 |
| Atomic Symbol | F | At |
| Atomic Weight | 18.9984032 | 210 |
| Phase at STP | Gas | Solid |
| Color | Colorless | Silver |
| Metallic Classification | Halogens | Halogens |
| Group in Periodic Table | group 17 | group 17 |
| Group Name | fluorine family | fluorine family |
| Period in Periodic Table | period 2 | period 6 |
| Block in Periodic Table | p -block | p -block |
| Electronic Configuration | [He] 2s2 2p5 | [Xe] 4f14 5d10 6s2 6p5 |
| Electronic Shell Structure (Electrons per shell) | 2, 7 | 2, 8, 18, 32, 18, 7 |
| Melting Point | 53.5 K | 575 K |
| Boiling Point | 85.03 K | - |
| CAS Number | CAS7782-41-4 | CAS7440-68-8 |
| Neighborhood Elements | Neighborhood Elements of Fluorine | Neighborhood Elements of Astatine |
History
| Parameter | Fluorine | Astatine |
|---|---|---|
| History | The element Fluorine was discovered by A.-M. Ampère in year 1810 in France. Fluorine derived its name from the Latin fluere, meaning 'to flow'. | The element Astatine was discovered by R. Corson,R. MacKenzie and E. Segrè in year 1940 in United States. Astatine derived its name from the Greek astatos, 'unstable'. |
| Discovery | A.-M. Ampère (1810) | R. Corson,R. MacKenzie and E. Segrè (1940) |
| Isolated | H. Moissan (1886) | () |
Presence: Abundance in Nature and Around Us
Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)
| Property | Fluorine | Astatine |
|---|---|---|
| Abundance in Universe | 400 / 30 | - / - |
| Abundance in Sun | 500 / 30 | - / - |
| Abundance in Meteorites | 89000 / 96000 | - / - |
| Abundance in Earth's Crust | 540000 / 590000 | - / - |
| Abundance in Oceans | 1300 / 420 | - / - |
| Abundance in Humans | 37000 / 12000 | - / - |
Crystal Structure and Atomic Structure
| Property | Fluorine | Astatine |
|---|---|---|
| Atomic Volume | 11.202 cm3/mol | - |
| Atomic Radius | 42 pm | 127 pm |
| Covalent Radius | 71 pm | - |
| Van der Waals Radius | 147 pm | 202 pm |
Atomic Spectrum - Spectral Lines | ||
| Emission Spectrum |  | Not available |
| Absorption Spectrum |  | Not available |
| Lattice Constant | 550, 328, 728 pm | - |
| Lattice Angle | π/2, π/2, π/2 | - |
| Space Group Name | C12/c1 | - |
| Space Group Number | 15 | - |
| Crystal Structure | Base Centered Monoclinic  | Face Centered Cubic  |
Atomic and Orbital Properties
| Property | Fluorine | Astatine |
|---|---|---|
| Atomic Number | 9 | 85 |
| Number of Electrons (with no charge) | 9 | 85 |
| Number of Protons | 9 | 85 |
| Mass Number | 18.9984032 | 210 |
| Number of Neutrons | 10 | 125 |
| Shell structure (Electrons per energy level) | 2, 7 | 2, 8, 18, 32, 18, 7 |
| Electron Configuration | [He] 2s2 2p5 | [Xe] 4f14 5d10 6s2 6p5 |
| Valence Electrons | 2s2 2p5 | 6s2 6p5 |
| Oxidation State | -1 | -1, 1 |
| Atomic Term Symbol (Quantum Numbers) | 2P3/2 | 2P3/2 |
| Shell structure |  |  |
Isotopes and Nuclear Properties
Fluorine has 1 stable naturally occuring isotopes while Astatine has 0 stable naturally occuring isotopes.
| Parameter | Fluorine | Astatine |
|---|---|---|
| Known Isotopes | 14F, 15F, 16F, 17F, 18F, 19F, 20F, 21F, 22F, 23F, 24F, 25F, 26F, 27F, 28F, 29F, 30F, 31F | 193At, 194At, 195At, 196At, 197At, 198At, 199At, 200At, 201At, 202At, 203At, 204At, 205At, 206At, 207At, 208At, 209At, 210At, 211At, 212At, 213At, 214At, 215At, 216At, 217At, 218At, 219At, 220At, 221At, 222At, 223At |
| Stable Isotopes | Naturally occurring stable isotopes: 19F | |
| Neutron Cross Section | 0.0096 | - |
| Neutron Mass Absorption | 0.00002 | - |
Chemical Properties: Ionization Energies and electron affinity
| Property | Fluorine | Astatine |
|---|---|---|
| Valence or Valency | 1 | 7 |
| Electronegativity | 3.98 Pauling Scale | 2.2 Pauling Scale |
| Oxidation State | -1 | -1, 1 |
| Electron Affinity | 328 kJ/mol | 270.1 kJ/mol |
| Ionization Energies | 1st: 1681 kJ/mol 2nd: 3374.2 kJ/mol 3rd: 6050.4 kJ/mol 4th: 8407.7 kJ/mol 5th: 11022.7 kJ/mol 6th: 15164.1 kJ/mol 7th: 17868 kJ/mol 8th: 92038.1 kJ/mol 9th: 106434.3 kJ/mol | 1st: 899.003 kJ/mol |
Physical Properties
| Property | Fluorine | Astatine |
|---|---|---|
| Phase at STP | Gas | Solid |
| Color | Colorless | Silver |
| Density | 0.001696 g/cm3 | - |
| Density (when liquid (at melting point)) | - | - |
| Molar Volume | 11.202 cm3/mol | - |
Mechanical and Hardness Properties
| Property | Fluorine | Astatine |
|---|---|---|
Elastic Properties | ||
| Young Modulus | - | - |
| Shear Modulus | - | - |
| Bulk Modulus | - | - |
| Poisson Ratio | - | - |
Hardness - Tests to Measure of Hardness of Element | ||
| Mohs Hardness | - | - |
| Vickers Hardness | - | - |
| Brinell Hardness | - | - |
Thermal and Electrical Conductivity
| Property | Fluorine | Astatine |
|---|---|---|
Heat and Conduction Properties | ||
| Thermal Conductivity | 0.0277 W/(m K) | 2 W/(m K) |
| Thermal Expansion | - | - |
Electrical Properties | ||
| Electrical Conductivity | - | - |
| Resistivity | - | - |
| Superconducting Point | - | - |
Magnetic and Optical Properties
| Property | Fluorine | Astatine |
|---|---|---|
Magnetic Properties | ||
| Magnetic Type | - | - |
| Curie Point | - | - |
| Mass Magnetic Susceptibility | - | - |
| Molar Magnetic Susceptibility | - | - |
| Volume Magnetic Susceptibility | - | - |
Optical Properties | ||
| Refractive Index | 1.000195 | - |
Acoustic Properties | ||
| Speed of Sound | - | - |
Thermal Properties - Enthalpies and thermodynamics
| Property | Fluorine | Astatine |
|---|---|---|
| Melting Point | 53.5 K | 575 K |
| Boiling Point | 85.03 K | - |
| Critical Temperature | 144.13 K | - |
| Superconducting Point | - | - |
Enthalpies | ||
| Heat of Fusion | 0.26 kJ/mol | 6 kJ/mol |
| Heat of Vaporization | 3.27 kJ/mol | 40 kJ/mol |
| Heat of Combustion | - | - |
Regulatory and Health - Health and Safety Parameters and Guidelines
| Parameter | Fluorine | Astatine |
|---|---|---|
| CAS Number | CAS7782-41-4 | CAS7440-68-8 |
| RTECS Number | RTECSLM6475000 | - |
| DOT Hazard Class | 2.3 | - |
| DOT Numbers | 9192 | - |
| EU Number | EU231-954-8 | - |
| NFPA Fire Rating | 0 | - |
| NFPA Health Rating | 4 | - |
| NFPA Reactivity Rating | 4 | - |
| NFPA Hazards | Oxidizing Agent, Water Reactive | - |
| AutoIgnition Point | - | - |
| Flashpoint | - | - |
Compare Fluorine and Astatine With Other Elements
Compare Fluorine and Astatine with other elements of the periodic table. Explore howFluorine and Astatine stack up against other elements of the periodic table. Use our interactive comparison tool to analyze 90+ properties across different metals, non-metals, metalloids, and noble gases. Understanding these differences is crucial for applications in engineering, chemistry, electronics, biology, and material science.