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  1. en.wikipedia.org › wiki › Polyatomic_nonmetalNonmetal - Wikipedia

    nonmetal Nonmetal halogen Noble gas Atomic radii (Å), periods 2 to 4 Span 2.05 to 2.31 1.9 to 2.24 1.63 to 2.19 1.56 to 2.12 Average 2.25 2.04 1.96 1.88 Ionization energy (kJ mol −1) Span 768 to 953 947 to 1,320 1,015 to 1,687 1,037 to 2,372 Average 855 1,158 1,276 1,590 Electron affinity (kJ mol −1) Span 27 to 190

  2. en.wikipedia.org › wiki › DiphosphaneDiphosphane - Wikipedia

    Diphosphane, or diphosphine, is an inorganic compound with the chemical formula P 2 H 4.This colourless liquid is one of several binary phosphorus hydrides. It is the impurity that typically causes samples of phosphine to ignite in air.

  3. Nonmetals can form different types of bonds depending on their partner atoms. Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

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