Periodic Table Element Comparison: Compare Elements - Helium vs Flerovium
Compare Helium and Flerovium
Compare Helium and Flerovium 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 Helium vs Flerovium with most reliable information about their properties, attributes, facts, uses etc. You can compare He vs Fl on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 1 | | | Atomic # Electronic Shell # Symbol Name Atomic Weight Metals | Metalloids | NonMetals | Alkali metals | Alkali earth metals | Lanthanoids | Transition metals | Post-transition metals | Other nonmetals | Halogens | Nobel gas | Actinoids |
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| 2 | | | | | | | | |
| 3 | | | | | | | | |
| 4 | | | | | | | | | | | | | | | | | | |
| 5 | | | | | | | | | | | | | | | | | | |
| 6 | | | 57 - 71
La - Lu Lanthanides | | | | | | | | | | | | | | | |
| 7 | | | 89 - 103
Ac - Lr Actinides | | | | | | | | | | | | | | | |
| Lanthanides | | | | | | | | | | | | | | | |
| Actinides | | | | | | | | | | | | | | | |
Facts
History
| History | The element Helium was discovered by P. Janssen and N. Lockyer in year 1868 in Sweden and United Kingdom. Helium derived its name from the Greek word helios, meaning 'sun'. | The element Flerovium was discovered by Yuri Oganessian et al.(JINRinDubna) in year 2004 in Russia. Flerovium derived its name from Flerov Laboratory of Nuclear Reactions, part of JINR where the element was synthesized; itself named for Georgy Flyorov, physicist. |
| Discovery | P. Janssen and N. Lockyer (1868) | Yuri Oganessian et al.(JINRinDubna) (2004) |
| Isolated | W. Ramsay,T. Cleve, and N. Langlet (1895) | () |
Presence: Abundance in Nature and Around Us
Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)
Crystal Structure and Atomic Structure
Atomic and Orbital Properties
| Atomic Number | 2 | 114 |
| Number of Electrons (with no charge) | 2 | 114 |
| Number of Protons | 2 | 114 |
| Mass Number | 4.002602 | 289 |
| Number of Neutrons | 2 | 175 |
| Shell structure (Electrons per energy level) | 2 | 2, 8, 18, 32, 32, 18, 4 |
| Electron Configuration | 1s2 | [Rn] 5f14 6d10 7s2 7p2 |
| Valence Electrons | 1s2 | 7s2 7p2 |
| Oxidation State | - | - |
| Atomic Term Symbol (Quantum Numbers) | 1S0 | 3P0 |
| Shell structure |  |  |
Isotopes and Nuclear Properties
Helium has 2 stable naturally occuring isotopes while Flerovium has 0 stable naturally occuring isotopes.
| Known Isotopes | 3He, 4He, 5He, 6He, 7He, 8He, 9He, 10He | 285Fl, 286Fl, 287Fl, 288Fl, 289Fl |
| Stable Isotopes | Naturally occurring stable isotopes: 3He, 4He | |
| Neutron Cross Section | 0.007 | - |
| Neutron Mass Absorption | 0.00001 | - |
Chemical Properties: Ionization Energies and electron affinity
Physical Properties
Thermal Properties - Enthalpies and thermodynamics
Regulatory and Health - Health and Safety Parameters and Guidelines
Compare With Other Elements
Compare Helium with all Group 18 elementsCompare Helium with all Period 1 elementsCompare Helium with all Noble Gas elements | Compare Flerovium with all Group 14 elementsCompare Flerovium with all Period 7 elementsCompare Flerovium with all Post Transition Metal elements |
