fluorine vs krypton vs oxygen vs neon

fluorine (chemical element) | krypton (chemical element) | oxygen (chemical element) | neon (chemical element)

Periodic table location

Images

| atomic symbol | atomic number | short electronic configuration fluorine | F | 9 | [He]2s^22p^5 krypton | Kr | 36 | [Ar]4s^23d^104p^6 oxygen | O | 8 | [He]2s^22p^4 neon | Ne | 10 | [He]2s^22p^6 | Aufbau diagram | block | group fluorine | 2p 2s | p | 17 krypton | 4p 3d 4s | p | 18 oxygen | 2p 2s | p | 16 neon | 2p 2s | p | 18 | period | atomic mass | half-life fluorine | 2 | 18.998403163 u | (stable) krypton | 4 | 83.798 u | (stable) oxygen | 2 | 15.999 u | (stable) neon | 2 | 20.1797 u | (stable)

phase at STP | all | gas melting point | median | -218.9 °C | highest | -157.36 °C (krypton) | lowest | -248.59 °C (neon) | distribution | boiling point | median | -185.5 °C | highest | -153.22 °C (krypton) | lowest | -246.08 °C (neon) | distribution | critical temperature | median | 149.36 K | highest | 209.41 K (krypton) | lowest | 44.4 K (neon) | distribution | critical pressure | median | 5.108 MPa | highest | 5.5 MPa (krypton) | lowest | 2.76 MPa (neon) molar heat of fusion | median | 0.3 kJ/mol | highest | 1.64 kJ/mol (krypton) | lowest | 0.222 kJ/mol (oxygen) molar heat of vaporization | median | 3.34 kJ/mol | highest | 9.02 kJ/mol (krypton) | lowest | 1.75 kJ/mol (neon) | distribution | specific heat at STP | median | 871 J/(kg K) | highest | 1030 J/(kg K) (neon) | lowest | 248.05 J/(kg K) (krypton) | distribution | adiabatic index | all | 7/5 | 5/3 (properties at standard conditions)

density | median | 0.001562 g/cm^3 | highest | 0.00375 g/cm^3 (krypton) | lowest | 9×10^-4 g/cm^3 (neon) | distribution | molar volume | median | 16800 cm^3/mol | highest | 22400 cm^3/mol (neon) | lowest | 11200 cm^3/mol (oxygen) refractive index | median | 1.000233 | highest | 1.000427 (krypton) | lowest | 1.000067 (neon) sound speed | median | 936 m/s | highest | 1120 m/s (krypton) | lowest | 317.5 m/s (oxygen) | distribution | thermal conductivity | median | 0.0271 W/(m K) | highest | 0.0491 W/(m K) (neon) | lowest | 0.00943 W/(m K) (krypton) | distribution | (properties at standard conditions)

valence | median | 1.5 | highest | 2 (krypton and oxygen) | lowest | 0 (neon) | distribution | electronegativity | median | 3.44 | highest | 3.98 (fluorine) | lowest | 3 (krypton) | distribution | electron affinity | median | 70.5 kJ/mol (kilojoules per mole) | highest | 328 kJ/mol (kilojoules per mole) (fluorine) | lowest | 0 kJ/mol (kilojoules per mole) (krypton and neon) | distribution | first ionization energy | median | 1515.9 kJ/mol (kilojoules per mole) | highest | 2080.7 kJ/mol (kilojoules per mole) (neon) | lowest | 1313.9 kJ/mol (kilojoules per mole) (oxygen) | distribution |

term symbol | all | ^1S_0 | ^2P_(3/2) | ^3P_2 atomic radius | median | 55 pm | highest | 88 pm (krypton) | lowest | 38 pm (neon) | distribution | covalent radius | median | 62 pm | highest | 116 pm (krypton) | lowest | 57 pm (fluorine and neon) | distribution | van der Waals radius | median | 153 pm | highest | 202 pm (krypton) | lowest | 147 pm (fluorine) (electronic ground state properties)

universe abundance | median | 0.065 mass% | highest | 1 mass% (oxygen) | lowest | 4×10^-6 mass% (krypton) solar abundance | median | 0.1 mass% | highest | 0.9 mass% (oxygen) | lowest | 5×10^-5 mass% (fluorine) crust abundance | median | 0.027 mass% | highest | 46 mass% (oxygen) | lowest | 1.5×10^-8 mass% (krypton) ocean abundance | median | 6.5×10^-5 mass% | highest | 86 mass% (oxygen) | lowest | 1.2×10^-8 mass% (neon) universe molar abundance | median | 0.004 mol% | highest | 0.08 mol% (oxygen) | lowest | 6×10^-8 mol% (krypton) solar molar abundance | median | 0.007 mol% | highest | 0.07 mol% (oxygen) | lowest | 3×10^-6 mol% (fluorine) ocean molar abundance | median | 2.1×10^-5 mol% | highest | 33 mol% (oxygen) | lowest | 1.6×10^-9 mol% (krypton) crust molar abundance | median | 0.03 mol% | highest | 60 mol% (oxygen) | lowest | 4×10^-9 mol% (krypton)