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  2. Triatomic hydrogen - Wikipedia

    en.wikipedia.org/wiki/Triatomic_hydrogen

    Triatomic hydrogen or H 3 is an unstable triatomic molecule containing only hydrogen.Since this molecule contains only three atoms of hydrogen it is the simplest triatomic molecule [1] and it is relatively simple to numerically solve the quantum mechanics description of the particles.

  3. Trihydrogen cation - Wikipedia

    en.wikipedia.org/wiki/Trihydrogen_cation

    The structure of H + 3 The MO diagram of the trihydrogen cation. The three hydrogen atoms in the molecule form an equilateral triangle , with a bond length of 0.90 Å on each side. The bonding among the atoms is a three-center two-electron bond , a delocalized resonance hybrid type of structure.

  4. Lewis structure - Wikipedia

    en.wikipedia.org/wiki/Lewis_structure

    In terms of Lewis structures, formal charge is used in the description, comparison, and assessment of likely topological and resonance structures [7] by determining the apparent electronic charge of each atom within, based upon its electron dot structure, assuming exclusive covalency or non-polar bonding.

  5. Trigonal pyramidal molecular geometry - Wikipedia

    en.wikipedia.org/wiki/Trigonal_pyramidal...

    μ (Polarity) >0 In chemistry , a trigonal pyramid is a molecular geometry with one atom at the apex and three atoms at the corners of a trigonal base, resembling a tetrahedron (not to be confused with the tetrahedral geometry ).

  6. Lone pair - Wikipedia

    en.wikipedia.org/wiki/Lone_pair

    Tetrahedral structure of water. The pairs often exhibit a negative polar character with their high charge density and are located closer to the atomic nucleus on average compared to the bonding pair of electrons. The presence of a lone pair decreases the bond angle between the bonding pair of electrons, due to their high electric charge, which ...

  7. Trigonal planar molecular geometry - Wikipedia

    en.wikipedia.org/wiki/Trigonal_planar_molecular...

    Structure of boron trifluoride, an example of a molecule with trigonal planar geometry. In chemistry , trigonal planar is a molecular geometry model with one atom at the center and three atoms at the corners of an equilateral triangle , called peripheral atoms, all in one plane. [ 1 ]

  8. Gallane - Wikipedia

    en.wikipedia.org/wiki/Gallane

    I.R spectroscopic studies indicate that monomeric GaH 3 has a trigonal planar structure. [4] Theoretical Ga-H bond lengths have been calculated as being in the range 155.7 pm to 158.7 pm. [ 3 ] Monomeric GaH 3 dimerises in the vapor phase to form Ga 2 H 6 , digallane(6) and the enthalpy change associated with the gas phase dissociation reaction ...

  9. Chemical polarity - Wikipedia

    en.wikipedia.org/wiki/Chemical_polarity

    In chemistry, polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole moment, with a negatively charged end and a positively charged end. Polar molecules must contain one or more polar bonds due to a difference in electronegativity between the bonded atoms.