phosphorus vs neon vs selenium vs argon vs chlorine

phosphorus (chemical element) | neon (chemical element) | selenium (chemical element) | argon (chemical element) | chlorine (chemical element)

Periodic table location

Images

| atomic symbol | atomic number | short electronic configuration phosphorus | P | 15 | [Ne]3s^23p^3 neon | Ne | 10 | [He]2s^22p^6 selenium | Se | 34 | [Ar]4s^23d^104p^4 argon | Ar | 18 | [Ne]3s^23p^6 chlorine | Cl | 17 | [Ne]3s^23p^5 | Aufbau diagram | block | group phosphorus | 3p 3s | p | 15 neon | 2p 2s | p | 18 selenium | 4p 3d 4s | p | 16 argon | 3p 3s | p | 18 chlorine | 3p 3s | p | 17 | period | atomic mass | half-life phosphorus | 3 | 30.973761998 u | (stable) neon | 2 | 20.1797 u | (stable) selenium | 4 | 78.971 u | (stable) argon | 3 | 39.948 u | (stable) chlorine | 3 | 35.45 u | (stable)

phase at STP | all | gas | solid melting point | median | -101.5 °C | highest | 221 °C (selenium) | lowest | -248.59 °C (neon) | distribution | boiling point | median | -34.04 °C | highest | 685 °C (selenium) | lowest | -246.08 °C (neon) | distribution | critical temperature | median | 283.9 K | highest | 1766 K (selenium) | lowest | 44.4 K (neon) critical pressure | median | 6.445 MPa | highest | 27.2 MPa (selenium) | lowest | 2.76 MPa (neon) molar heat of fusion | median | 1.18 kJ/mol | highest | 5.4 kJ/mol (selenium) | lowest | 0.34 kJ/mol (neon) | distribution | molar heat of vaporization | median | 10.2 kJ/mol | highest | 26 kJ/mol (selenium) | lowest | 1.75 kJ/mol (neon) | distribution | specific heat at STP | median | 520.33 J/(kg K) | highest | 1030 J/(kg K) (neon) | lowest | 321.2 J/(kg K) (selenium) | distribution | adiabatic index | all | 7/5 | 5/3 (properties at standard conditions)

density | median | 0.003214 g/cm^3 | highest | 4.819 g/cm^3 (selenium) | lowest | 9×10^-4 g/cm^3 (neon) molar volume | median | 11030 cm^3/mol | highest | 22400 cm^3/mol (neon) | lowest | 16.39 cm^3/mol (selenium) | distribution | Brinell hardness | all | 736 MPa bulk modulus | median | 8.3 GPa | highest | 11 GPa (phosphorus) | lowest | 1.1 GPa (chlorine) | distribution | Poisson ratio | all | 0.33 refractive index | median | 1.000773 | highest | 1.001212 (phosphorus) | lowest | 1.000067 (neon) sound speed | median | 627 m/s | highest | 3350 m/s (selenium) | lowest | 206 m/s (chlorine) thermal conductivity | median | 0.0491 W/(m K) | highest | 0.52 W/(m K) (selenium) | lowest | 0.0089 W/(m K) (chlorine) | distribution | (properties at standard conditions)

valence | median | 5 | highest | 6 (selenium) | lowest | 0 (neon and argon) | distribution | electronegativity | median | 2.55 | highest | 3.16 (chlorine) | lowest | 2.19 (phosphorus) | distribution | electron affinity | median | 72 kJ/mol (kilojoules per mole) | highest | 349 kJ/mol (kilojoules per mole) (chlorine) | lowest | 0 kJ/mol (kilojoules per mole) (neon and argon) | distribution | first ionization energy | median | 1251.2 kJ/mol (kilojoules per mole) | highest | 2080.7 kJ/mol (kilojoules per mole) (neon) | lowest | 941 kJ/mol (kilojoules per mole) (selenium) | distribution |

term symbol | all | ^1S_0 | ^2P_(3/2) | ^3P_2 | ^4S_(3/2) atomic radius | median | 100 pm | highest | 115 pm (selenium) | lowest | 38 pm (neon) | distribution | covalent radius | median | 106 pm | highest | 120 pm (selenium) | lowest | 58 pm (neon) | distribution | van der Waals radius | median | 180 pm | highest | 190 pm (selenium) | lowest | 154 pm (neon) | distribution | (electronic ground state properties)

universe abundance | median | 7×10^-4 mass% | highest | 0.13 mass% (neon) | lowest | 3×10^-6 mass% (selenium) solar abundance | median | 0.0039 mass% | highest | 0.1 mass% (neon) | lowest | 7×10^-4 mass% (phosphorus) meteorite abundance | median | 0.037 mass% | highest | 0.11 mass% (phosphorus) | lowest | 0.0013 mass% (selenium) | distribution | crust abundance | median | 1.5×10^-4 mass% | highest | 0.099 mass% (phosphorus) | lowest | 3×10^-7 mass% (neon) ocean abundance | median | 7×10^-6 mass% | highest | 2 mass% (chlorine) | lowest | 1.2×10^-8 mass% (neon) human abundance | median | 0.12 mass% | highest | 1.1 mass% (phosphorus) | lowest | 5×10^-6 mass% (selenium) universe molar abundance | median | 3×10^-5 mol% | highest | 0.008 mol% (neon) | lowest | 5×10^-8 mol% (selenium) solar molar abundance | median | 1.2×10^-4 mol% | highest | 0.007 mol% (neon) | lowest | 3×10^-5 mol% (phosphorus and chlorine) meteorite molar abundance | median | 0.016 mol% | highest | 0.07 mol% (phosphorus) | lowest | 2.9×10^-4 mol% (selenium) ocean molar abundance | median | 1.4×10^-6 mol% | highest | 0.35 mol% (chlorine) | lowest | 3.5×10^-9 mol% (selenium) crust molar abundance | median | 7.8×10^-5 mol% | highest | 0.07 mol% (phosphorus) | lowest | 3×10^-7 mol% (neon) human molar abundance | median | 0.021 mol% | highest | 0.22 mol% (phosphorus) | lowest | 4×10^-7 mol% (selenium)