Compare Hydrogen vs Mercury: Periodic Table Element Comparison Table and Properties
Compare the elements Hydrogen and Mercury on the basis of their properties, attributes and periodic table facts. Compare elements - Hydrogen and Mercury 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 Hydrogen vs Mercury with most reliable information about their properties, attributes, facts, uses etc. You can compare H vs Hg 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 Hydrogen and Mercury.
Hydrogen and Mercury Comparison
Here's a detailed comparison between Hydrogen (H) and Mercury (Hg), focusing on their position in the periodic table, physical and chemical properties, stability, and uses.
Facts - Basic Element Details
| Name | Hydrogen | Mercury |
|---|---|---|
| Atomic Number | 1 | 80 |
| Atomic Symbol | H | Hg |
| Atomic Weight | 1.00794 | 200.59 |
| Phase at STP | Gas | Liquid |
| Color | Colorless | Silver |
| Metallic Classification | Other Nonmetal | Transition Metal |
| Group in Periodic Table | group 1 | group 12 |
| Group Name | lithium family | zinc family |
| Period in Periodic Table | period 1 | period 6 |
| Block in Periodic Table | s -block | d -block |
| Electronic Configuration | 1s1 | [Xe] 4f14 5d10 6s2 |
| Electronic Shell Structure (Electrons per shell) | 1 | 2, 8, 18, 32, 18, 2 |
| Melting Point | 14.01 K | 234.32 K |
| Boiling Point | 20.28 K | 629.88 K |
| CAS Number | CAS1333-74-0 | CAS7439-97-6 |
| Neighborhood Elements | Neighborhood Elements of Hydrogen | Neighborhood Elements of Mercury |
History
| Parameter | Hydrogen | Mercury |
|---|---|---|
| History | The element Hydrogen was discovered by H. Cavendish in year 1766 in United Kingdom. Hydrogen derived its name from the Greek elements hydro- and -gen meaning 'water-forming'. | The element Mercury was discovered by Indians/Chinese in year Before 2000 BCE. Mercury derived its name from the New Latin name mercurius, named after the Roman god (Hg from former name hydrargyrum, from Greek hydr-, 'water', and argyros, 'silver'). |
| Discovery | H. Cavendish (1766) | Indians/Chinese (Before 2000 BCE) |
| Isolated | Paracelsus (1500) | Egypt (1500 BCE) |
Presence: Abundance in Nature and Around Us
Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)
| Property | Hydrogen | Mercury |
|---|---|---|
| Abundance in Universe | 750000000 / 930000000 | 1 / 0.006 |
| Abundance in Sun | 750000000 / 930000000 | 20 / 0.12 |
| Abundance in Meteorites | 24000000 / 170000000 | 250 / 20 |
| Abundance in Earth's Crust | 1500000 / 31000000 | 67 / 7 |
| Abundance in Oceans | 107800000 / 662000000 | 0.05 / 0.0015 |
| Abundance in Humans | 100000000 / 620000000 | - / - |
Crystal Structure and Atomic Structure
| Property | Hydrogen | Mercury |
|---|---|---|
| Atomic Volume | 22.4135 cm3/mol | 14.09 cm3/mol |
| Atomic Radius | 53 pm | 171 pm |
| Covalent Radius | 37 pm | 149 pm |
| Van der Waals Radius | 120 pm | 155 pm |
Atomic Spectrum - Spectral Lines | ||
| Emission Spectrum |  |  |
| Absorption Spectrum |  |  |
| Lattice Constant | 470, 470, 340 pm | 300.5, 300.5, 300.5 pm |
| Lattice Angle | π/2, π/2, 2 π/3 | 1.23081, 1.23081, 1.23081 |
| Space Group Name | P63/mmc | R_ 3m |
| Space Group Number | 194 | 166 |
| Crystal Structure | Simple Hexagonal  | Simple Trigonal  |
Atomic and Orbital Properties
| Property | Hydrogen | Mercury |
|---|---|---|
| Atomic Number | 1 | 80 |
| Number of Electrons (with no charge) | 1 | 80 |
| Number of Protons | 1 | 80 |
| Mass Number | 1.00794 | 200.59 |
| Number of Neutrons | 0 | 121 |
| Shell structure (Electrons per energy level) | 1 | 2, 8, 18, 32, 18, 2 |
| Electron Configuration | 1s1 | [Xe] 4f14 5d10 6s2 |
| Valence Electrons | 1s1 | 5d10 6s2 |
| Oxidation State | -1, 1 | 1, 2 |
| Atomic Term Symbol (Quantum Numbers) | 2S1/2 | 1S0 |
| Shell structure |  |  |
Isotopes and Nuclear Properties
Hydrogen has 2 stable naturally occuring isotopes while Mercury has 7 stable naturally occuring isotopes.
| Parameter | Hydrogen | Mercury |
|---|---|---|
| Known Isotopes | 1H, 2H, 3H, 4H, 5H, 6H, 7H | 171Hg, 172Hg, 173Hg, 174Hg, 175Hg, 176Hg, 177Hg, 178Hg, 179Hg, 180Hg, 181Hg, 182Hg, 183Hg, 184Hg, 185Hg, 186Hg, 187Hg, 188Hg, 189Hg, 190Hg, 191Hg, 192Hg, 193Hg, 194Hg, 195Hg, 196Hg, 197Hg, 198Hg, 199Hg, 200Hg, 201Hg, 202Hg, 203Hg, 204Hg, 205Hg, 206Hg, 207Hg, 208Hg, 209Hg, 210Hg |
| Stable Isotopes | Naturally occurring stable isotopes: 1H, 2H | Naturally occurring stable isotopes: 196Hg, 198Hg, 199Hg, 200Hg, 201Hg, 202Hg, 204Hg |
| Neutron Cross Section | 0.332 | 374 |
| Neutron Mass Absorption | 0.011 | 0.063 |
Chemical Properties: Ionization Energies and electron affinity
| Property | Hydrogen | Mercury |
|---|---|---|
| Valence or Valency | 1 | 2 |
| Electronegativity | 2.2 Pauling Scale | 2 Pauling Scale |
| Oxidation State | -1, 1 | 1, 2 |
| Electron Affinity | 72.8 kJ/mol | 0 kJ/mol |
| Ionization Energies | 1st: 1312 kJ/mol | 1st: 1007.1 kJ/mol 2nd: 1810 kJ/mol 3rd: 3300 kJ/mol |
Physical Properties
Hydrogen (0.0000899 g/cm³) is less dense than Mercury (13.534 g/cm³). This means that a given volume of Mercury will be heavier than the same volume of Hydrogen. Mercury is about 15054404.999999998 denser than Hydrogen
| Property | Hydrogen | Mercury |
|---|---|---|
| Phase at STP | Gas | Liquid |
| Color | Colorless | Silver |
| Density | 0.0000899 g/cm3 | 13.534 g/cm3 |
| Density (when liquid (at melting point)) | - | 13.534 g/cm3 |
| Molar Volume | 22.4135 cm3/mol | 14.09 cm3/mol |
Mechanical and Hardness Properties
| Property | Hydrogen | Mercury |
|---|---|---|
Elastic Properties | ||
| Young Modulus | - | - |
| Shear Modulus | - | - |
| Bulk Modulus | - | 25 GPa |
| Poisson Ratio | - | - |
Hardness - Tests to Measure of Hardness of Element | ||
| Mohs Hardness | - | - |
| Vickers Hardness | - | - |
| Brinell Hardness | - | - |
Thermal and Electrical Conductivity
| Property | Hydrogen | Mercury |
|---|---|---|
Heat and Conduction Properties | ||
| Thermal Conductivity | 0.1805 W/(m K) | 8.3 W/(m K) |
| Thermal Expansion | - | - |
Electrical Properties | ||
| Electrical Conductivity | - | 1000000 S/m |
| Resistivity | - | 9.6e-7 m Ω |
| Superconducting Point | - | 4.154 |
Magnetic and Optical Properties
| Property | Hydrogen | Mercury |
|---|---|---|
Magnetic Properties | ||
| Magnetic Type | Diamagnetic | Diamagnetic |
| Curie Point | - | - |
| Mass Magnetic Susceptibility | -2.48e-8 m3/kg | -2.1e-9 m3/kg |
| Molar Magnetic Susceptibility | -4.999e-11 m3/mol | -4.21e-10 m3/mol |
| Volume Magnetic Susceptibility | -2.23e-9 | -0.0000284 |
Optical Properties | ||
| Refractive Index | 1.000132 | 1.000933 |
Acoustic Properties | ||
| Speed of Sound | 1270 m/s | 1407 m/s |
Thermal Properties - Enthalpies and thermodynamics
| Property | Hydrogen | Mercury |
|---|---|---|
| Melting Point | 14.01 K | 234.32 K |
| Boiling Point | 20.28 K | 629.88 K |
| Critical Temperature | 32.97 K | 1750 K |
| Superconducting Point | - | 4.154 |
Enthalpies | ||
| Heat of Fusion | 0.558 kJ/mol | 2.29 kJ/mol |
| Heat of Vaporization | 0.452 kJ/mol | 59.2 kJ/mol |
| Heat of Combustion | - | - |
Regulatory and Health - Health and Safety Parameters and Guidelines
| Parameter | Hydrogen | Mercury |
|---|---|---|
| CAS Number | CAS1333-74-0 | CAS7439-97-6 |
| RTECS Number | RTECSMW8900000 | RTECSOV4550000 |
| DOT Hazard Class | 2.1 | 8 |
| DOT Numbers | 1966 | 2809 |
| EU Number | - | - |
| NFPA Fire Rating | 4 | 0 |
| NFPA Health Rating | 3 | 3 |
| NFPA Reactivity Rating | 0 | 0 |
| NFPA Hazards | - | - |
| AutoIgnition Point | 535.5 °C | - |
| Flashpoint | -18 °C | - |
Compare Hydrogen and Mercury With Other Elements
Compare Hydrogen and Mercury with other elements of the periodic table. Explore howHydrogen and Mercury 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.