Periodic Table Element Comparison: Compare Elements - Silicon vs Neodymium
Compare Silicon and Neodymium
Compare Silicon and Neodymium 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 Silicon vs Neodymium with most reliable information about their properties, attributes, facts, uses etc. You can compare Si vs Nd on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.
Facts
Name | Silicon | Neodymium |
Atomic Number | 14 | 60 |
Atomic Symbol | Si | Nd |
Atomic Weight | 28.0855 | 144.24 |
Phase at STP | Solid | Solid |
Color | Gray | Silver |
Metallic Classification | Metalloid | Lanthanide |
Group in Periodic Table | group 14 | group - |
Group Name | carbon family | |
Period in Periodic Table | period 3 | period 6 |
Block in Periodic Table | p -block | f -block |
Electronic Configuration | [Ne] 3s2 3p2 | [Xe] 4f4 6s2 |
Electronic Shell Structure (Electrons per shell) | 2, 8, 4 | 2, 8, 18, 22, 8, 2 |
Melting Point | 1687 K | 1294 K |
Boiling Point | 3173 K | 3373 K |
CAS Number | CAS7440-21-3 | CAS7440-00-8 |
Neighborhood Elements | Neighborhood Elements of Silicon | Neighborhood Elements of Neodymium |
History
Name | Silicon | Neodymium |
History | The element Silicon was discovered by J. Berzelius in year 1823 in Sweden. Silicon derived its name from the Latin silex, 'flint' (originally silicium). | The element Neodymium was discovered by C. A. von Welsbach in year 1885 in Austria. Neodymium derived its name from the Greek neos didymos meaning 'new twin'. |
Discovery | J. Berzelius (1823) | C. A. von Welsbach (1885) |
Isolated | J. Berzelius (1823) | () |
Presence: Abundance in Nature and Around Us
Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)
Name | Silicon | Neodymium |
Abundance in Universe | 700000 / 30000 | 10 / 0.09 |
Abundance in Sun | 900000 / 40000 | 3 / 0.02 |
Abundance in Meteorites | 140000000 / 100000000 | 510 / 70 |
Abundance in Earth's Crust | 270000000 / 200000000 | 33000 / 4800 |
Abundance in Oceans | 1000 / 220 | 0.0028 / 0.00012 |
Abundance in Humans | 260000 / 58000 | - / - |
Crystal Structure and Atomic Structure
Name | Silicon | Neodymium |
Atomic Volume | 12.054 cm3/mol | 20.576 cm3/mol |
Atomic Radius | 111 pm | 206 pm |
Covalent Radius | 111 pm | - |
Van der Waals Radius | 210 pm | - |
Atomic Spectrum - Spectral Lines | ||
Emission Spectrum | ||
Absorption Spectrum | ||
Lattice Constant | 543.09, 543.09, 543.09 pm | 365.8, 365.8, 1179.9 pm |
Lattice Angle | π/2, π/2, π/2 | π/2, π/2, 2 π/3 |
Space Group Name | Fd_ 3m | P63/mmc |
Space Group Number | 227 | 194 |
Crystal Structure | Tetrahedral Packing | Simple Hexagonal |
Atomic and Orbital Properties
Name | Silicon | Neodymium |
Atomic Number | 14 | 60 |
Number of Electrons (with no charge) | 14 | 60 |
Number of Protons | 14 | 60 |
Mass Number | 28.0855 | 144.24 |
Number of Neutrons | 14 | 84 |
Shell structure (Electrons per energy level) | 2, 8, 4 | 2, 8, 18, 22, 8, 2 |
Electron Configuration | [Ne] 3s2 3p2 | [Xe] 4f4 6s2 |
Valence Electrons | 3s2 3p2 | 4f4 6s2 |
Oxidation State | -4, 4 | 3 |
Atomic Term Symbol (Quantum Numbers) | 3P0 | 5I4 |
Shell structure |
Isotopes and Nuclear Properties
Silicon has 3 stable naturally occuring isotopes while Neodymium has 5 stable naturally occuring isotopes.
Name | Silicon | Neodymium |
Known Isotopes | 22Si, 23Si, 24Si, 25Si, 26Si, 27Si, 28Si, 29Si, 30Si, 31Si, 32Si, 33Si, 34Si, 35Si, 36Si, 37Si, 38Si, 39Si, 40Si, 41Si, 42Si, 43Si, 44Si | 124Nd, 125Nd, 126Nd, 127Nd, 128Nd, 129Nd, 130Nd, 131Nd, 132Nd, 133Nd, 134Nd, 135Nd, 136Nd, 137Nd, 138Nd, 139Nd, 140Nd, 141Nd, 142Nd, 143Nd, 144Nd, 145Nd, 146Nd, 147Nd, 148Nd, 149Nd, 150Nd, 151Nd, 152Nd, 153Nd, 154Nd, 155Nd, 156Nd, 157Nd, 158Nd, 159Nd, 160Nd, 161Nd |
Stable Isotopes | Naturally occurring stable isotopes: 28Si, 29Si, 30Si | Naturally occurring stable isotopes: 142Nd, 143Nd, 145Nd, 146Nd, 148Nd |
Neutron Cross Section | 171 | 49 |
Neutron Mass Absorption | 0.0002 | 0.011 |
Chemical Properties: Ionization Energies and electron affinity
Name | Silicon | Neodymium |
Valence or Valency | 4 | 3 |
Electronegativity | 1.9 Pauling Scale | 1.14 Pauling Scale |
Electron Affinity | 133.6 kJ/mol | 50 kJ/mol |
Ionization Energies | 1st: 786.5 kJ/mol 2nd: 1577.1 kJ/mol 3rd: 3231.6 kJ/mol 4th: 4355.5 kJ/mol 5th: 16091 kJ/mol 6th: 19805 kJ/mol 7th: 23780 kJ/mol 8th: 29287 kJ/mol 9th: 33878 kJ/mol 10th: 38726 kJ/mol 11th: 45962 kJ/mol 12th: 50502 kJ/mol 13th: 235196 kJ/mol 14th: 257923 kJ/mol | 1st: 533.1 kJ/mol 2nd: 1040 kJ/mol 3rd: 2130 kJ/mol 4th: 3900 kJ/mol |
Physical Properties
Name | Silicon | Neodymium |
Density | 2.33 g/cm3 | 7.01 g/cm3 |
Molar Volume | 12.054 cm3/mol | 20.576 cm3/mol |
Elastic Properties | ||
Young Modulus | 47 | 41 |
Shear Modulus | - | 16 GPa |
Bulk Modulus | 100 GPa | 32 GPa |
Poisson Ratio | - | 0.28 |
Hardness - Tests to Measure of Hardness of Element | ||
Mohs Hardness | 6.5 MPa | - |
Vickers Hardness | - | 343 MPa |
Brinell Hardness | - | 265 MPa |
Electrical Properties | ||
Electrical Conductivity | 1000 S/m | 1600000 S/m |
Resistivity | 0.001 m Ω | 6.4e-7 m Ω |
Superconducting Point | - | - |
Heat and Conduction Properties | ||
Thermal Conductivity | 150 W/(m K) | 17 W/(m K) |
Thermal Expansion | 0.0000026 /K | 0.0000096 /K |
Magnetic Properties | ||
Magnetic Type | Diamagnetic | Paramagnetic |
Curie Point | - | - |
Mass Magnetic Susceptibility | -1.6e-9 m3/kg | 4.8e-7 m3/kg |
Molar Magnetic Susceptibility | -4.49e-11 m3/mol | 6.9235e-8 m3/mol |
Volume Magnetic Susceptibility | -0.00000373 | 0.0033648 |
Optical Properties | ||
Refractive Index | - | - |
Acoustic Properties | ||
Speed of Sound | 2200 m/s | 2330 m/s |
Thermal Properties - Enthalpies and thermodynamics
Name | Silicon | Neodymium |
Melting Point | 1687 K | 1294 K |
Boiling Point | 3173 K | 3373 K |
Critical Temperature | - | - |
Superconducting Point | - | - |
Enthalpies | ||
Heat of Fusion | 50.2 kJ/mol | 7.1 kJ/mol |
Heat of Vaporization | 359 kJ/mol | 285 kJ/mol |
Heat of Combustion | -9055 J/(kg K) | - |
Regulatory and Health - Health and Safety Parameters and Guidelines
Name | Silicon | Neodymium |
CAS Number | CAS7440-21-3 | CAS7440-00-8 |
RTECS Number | RTECSVW0400000 | RTECSQO8575000 |
DOT Hazard Class | 4.1 | - |
DOT Numbers | 1346 | - |
EU Number | - | - |
NFPA Fire Rating | 0 | - |
NFPA Health Rating | 1 | - |
NFPA Reactivity Rating | 0 | - |
NFPA Hazards | - | - |
AutoIgnition Point | 150 °C | - |
Flashpoint | - | - |