Periodic Table Element Comparison: Compare Elements - Selenium vs Titanium
Compare Selenium and Titanium on the basis of their properties, attributes and periodic table facts. Compare elements on more than 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 Selenium vs Titanium with most reliable information about their properties, attributes, facts, uses etc. You can compare Se vs Ti on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more. Selenium and Titanium comparison table on more than 90 properties.
Selenium and Titanium Comparison
Facts
| Name | Selenium | Titanium |
|---|---|---|
| Atomic Number | 34 | 22 |
| Atomic Symbol | Se | Ti |
| Atomic Weight | 78.96 | 47.867 |
| Phase at STP | Solid | Solid |
| Color | Gray | Silver |
| Metallic Classification | Other Nonmetal | Transition Metal |
| Group in Periodic Table | group 16 | group 4 |
| Group Name | oxygen family | titanium family |
| Period in Periodic Table | period 4 | period 4 |
| Block in Periodic Table | p -block | d -block |
| Electronic Configuration | [Ar] 3d10 4s2 4p4 | [Ar] 3d2 4s2 |
| Electronic Shell Structure (Electrons per shell) | 2, 8, 18, 6 | 2, 8, 10, 2 |
| Melting Point | 494 K | 1941 K |
| Boiling Point | 958 K | 3560 K |
| CAS Number | CAS7782-49-2 | CAS7440-32-6 |
| Neighborhood Elements | Neighborhood Elements of Selenium | Neighborhood Elements of Titanium |
History
| Parameter | Selenium | Titanium |
|---|---|---|
| History | The element Selenium was discovered by J. Berzelius and G. Gahn in year 1817 in Sweden. Selenium derived its name from the Greek selene, meaning 'moon'. | The element Titanium was discovered by W. Gregor in year 1791 in United Kingdom. Titanium derived its name from Titans, the sons of the Earth goddess of Greek mythology. |
| Discovery | J. Berzelius and G. Gahn (1817) | W. Gregor (1791) |
| Isolated | J. Berzelius and G. Gahn (1817) | J. Berzelius (1825) |
Presence: Abundance in Nature and Around Us
Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)
| Property | Selenium | Titanium |
|---|---|---|
| Abundance in Universe | 30 / 0.5 | 3000 / 80 |
| Abundance in Sun | - / - | 4000 / 100 |
| Abundance in Meteorites | 13000 / 2900 | 550000 / 230000 |
| Abundance in Earth's Crust | 50 / 10 | 6600000 / 2900000 |
| Abundance in Oceans | 0.45 / 0.035 | 1 / 0.13 |
| Abundance in Humans | 50 / 4 | - / - |
Crystal Structure and Atomic Structure
| Property | Selenium | Titanium |
|---|---|---|
| Atomic Volume | 16.385 cm3/mol | 10.621 cm3/mol |
| Atomic Radius | 103 pm | 176 pm |
| Covalent Radius | 116 pm | 136 pm |
| Van der Waals Radius | 190 pm | - |
Atomic Spectrum - Spectral Lines | ||
| Emission Spectrum |  |  |
| Absorption Spectrum |  |  |
| Lattice Constant | 905.4, 908.3, 1160.1 pm | 295.08, 295.08, 468.55 pm |
| Lattice Angle | π/2, 1.58493, π/2 | π/2, π/2, 2 π/3 |
| Space Group Name | P121/c1 | P63/mmc |
| Space Group Number | 14 | 194 |
| Crystal Structure | Simple Monoclinic  | Simple Hexagonal  |
Atomic and Orbital Properties
| Property | Selenium | Titanium |
|---|---|---|
| Atomic Number | 34 | 22 |
| Number of Electrons (with no charge) | 34 | 22 |
| Number of Protons | 34 | 22 |
| Mass Number | 78.96 | 47.867 |
| Number of Neutrons | 45 | 26 |
| Shell structure (Electrons per energy level) | 2, 8, 18, 6 | 2, 8, 10, 2 |
| Electron Configuration | [Ar] 3d10 4s2 4p4 | [Ar] 3d2 4s2 |
| Valence Electrons | 4s2 4p4 | 3d2 4s2 |
| Oxidation State | -2, 2, 4, 6 | 2, 3, 4 |
| Atomic Term Symbol (Quantum Numbers) | 3P2 | 3F2 |
| Shell structure |  |  |
Isotopes and Nuclear Properties
Selenium has 5 stable naturally occuring isotopes while Titanium has 5 stable naturally occuring isotopes.
| Parameter | Selenium | Titanium |
|---|---|---|
| Known Isotopes | 65Se, 66Se, 67Se, 68Se, 69Se, 70Se, 71Se, 72Se, 73Se, 74Se, 75Se, 76Se, 77Se, 78Se, 79Se, 80Se, 81Se, 82Se, 83Se, 84Se, 85Se, 86Se, 87Se, 88Se, 89Se, 90Se, 91Se, 92Se, 93Se, 94Se | 38Ti, 39Ti, 40Ti, 41Ti, 42Ti, 43Ti, 44Ti, 45Ti, 46Ti, 47Ti, 48Ti, 49Ti, 50Ti, 51Ti, 52Ti, 53Ti, 54Ti, 55Ti, 56Ti, 57Ti, 58Ti, 59Ti, 60Ti, 61Ti, 62Ti, 63Ti |
| Stable Isotopes | Naturally occurring stable isotopes: 74Se, 76Se, 77Se, 78Se, 80Se | Naturally occurring stable isotopes: 46Ti, 47Ti, 48Ti, 49Ti, 50Ti |
| Neutron Cross Section | 11.7 | 6.1 |
| Neutron Mass Absorption | 0.0056 | 0.0044 |
Chemical Properties: Ionization Energies and electron affinity
| Property | Selenium | Titanium |
|---|---|---|
| Valence or Valency | 6 | 4 |
| Electronegativity | 2.55 Pauling Scale | 1.54 Pauling Scale |
| Electron Affinity | 195 kJ/mol | 7.6 kJ/mol |
| Ionization Energies | 1st: 941 kJ/mol 2nd: 2045 kJ/mol 3rd: 2973.7 kJ/mol 4th: 4144 kJ/mol 5th: 6590 kJ/mol 6th: 7880 kJ/mol 7th: 14990 kJ/mol | 1st: 658.8 kJ/mol 2nd: 1309.8 kJ/mol 3rd: 2652.5 kJ/mol 4th: 4174.6 kJ/mol 5th: 9581 kJ/mol 6th: 11533 kJ/mol 7th: 13590 kJ/mol 8th: 16440 kJ/mol 9th: 18530 kJ/mol 10th: 20833 kJ/mol 11th: 25575 kJ/mol 12th: 28125 kJ/mol 13th: 76015 kJ/mol 14th: 83280 kJ/mol 15th: 90880 kJ/mol 16th: 100700 kJ/mol 17th: 109100 kJ/mol 18th: 117800 kJ/mol 19th: 129900 kJ/mol 20th: 137530 kJ/mol 21st: 602930 kJ/mol 22nd: 639294 kJ/mol |
Physical Properties
| Property | Selenium | Titanium |
|---|---|---|
| Density | 4.819 g/cm3 | 4.507 g/cm3 |
| Molar Volume | 16.385 cm3/mol | 10.621 cm3/mol |
Elastic Properties | ||
| Young Modulus | 10 | 116 |
| Shear Modulus | 3.7 GPa | 44 GPa |
| Bulk Modulus | 8.3 GPa | 110 GPa |
| Poisson Ratio | 0.33 | 0.32 |
Hardness - Tests to Measure of Hardness of Element | ||
| Mohs Hardness | 2 MPa | 6 MPa |
| Vickers Hardness | - | 970 MPa |
| Brinell Hardness | 736 MPa | 716 MPa |
Electrical Properties | ||
| Electrical Conductivity | - | 2500000 S/m |
| Resistivity | - | 4e-7 m Ω |
| Superconducting Point | - | 0.4 |
Heat and Conduction Properties | ||
| Thermal Conductivity | 0.52 W/(m K) | 22 W/(m K) |
| Thermal Expansion | - | 0.0000086 /K |
Magnetic Properties | ||
| Magnetic Type | Diamagnetic | Paramagnetic |
| Curie Point | - | - |
| Mass Magnetic Susceptibility | -4e-9 m3/kg | 4.01e-8 m3/kg |
| Molar Magnetic Susceptibility | -3.16e-10 m3/mol | 1.919e-9 m3/mol |
| Volume Magnetic Susceptibility | -0.0000193 | 0.0001807 |
Optical Properties | ||
| Refractive Index | 1.000895 | - |
Acoustic Properties | ||
| Speed of Sound | 3350 m/s | 4140 m/s |
Thermal Properties - Enthalpies and thermodynamics
| Property | Selenium | Titanium |
|---|---|---|
| Melting Point | 494 K | 1941 K |
| Boiling Point | 958 K | 3560 K |
| Critical Temperature | 1766 K | - |
| Superconducting Point | - | 0.4 |
Enthalpies | ||
| Heat of Fusion | 5.4 kJ/mol | 18.7 kJ/mol |
| Heat of Vaporization | 26 kJ/mol | 425 kJ/mol |
| Heat of Combustion | - | - |
Regulatory and Health - Health and Safety Parameters and Guidelines
| Parameter | Selenium | Titanium |
|---|---|---|
| CAS Number | CAS7782-49-2 | CAS7440-32-6 |
| RTECS Number | {N/A, RTECSVS7700000, N/A} | - |
| DOT Hazard Class | 6.1 | 4.2 |
| DOT Numbers | 2658 | 2546 |
| EU Number | - | - |
| NFPA Fire Rating | 0 | 1 |
| NFPA Health Rating | 2 | 1 |
| NFPA Reactivity Rating | 0 | 2 |
| NFPA Hazards | - | - |
| AutoIgnition Point | - | 250 °C |
| Flashpoint | - | - |
Compare With Other Elements
Compare Selenium and Titanium with other elements of the periodic table.