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  2. Ammonia - Wikipedia

    en.wikipedia.org/wiki/Ammonia

    H2NCH2CH2OH → NH3 + CH3CHO. Ammonia is both a metabolic waste and a metabolic input throughout the biosphere. It is an important source of nitrogen for living systems. Although atmospheric nitrogen abounds (more than 75%), few living creatures are capable of using atmospheric nitrogen in its diatomic form, N2 gas.

  3. Lone pair - Wikipedia

    en.wikipedia.org/wiki/Lone_pair

    Lone pairs can contribute to a molecule's dipole moment. NH 3 has a dipole moment of 1.42 D. As the electronegativity of nitrogen (3.04) is greater than that of hydrogen (2.2) the result is that the N-H bonds are polar with a net negative charge on the nitrogen atom and a smaller net positive charge on the hydrogen atoms.

  4. 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.

  5. 1,3-dipole - Wikipedia

    en.wikipedia.org/wiki/1,3-dipole

    1,3-dipole. From top to bottom, azides, nitrones, and. nitro compounds are. examples of 1,3-dipoles. In organic chemistry, a 1,3-dipolar compound or 1,3-dipole is a dipolar compound with delocalized electrons and a separation of charge over three atoms. They are reactants in 1,3-dipolar cycloadditions. [1][2]

  6. Dipole - Wikipedia

    en.wikipedia.org/wiki/Dipole

    Dipole. The magnetic field of a sphere with a north magnetic pole at the top and a south magnetic pole at the bottom. By comparison, Earth has a south magnetic pole near its north geographic pole and a north magnetic pole near its South Pole. In physics, a dipole (from Ancient Greek δίς (dís) 'twice' and πόλος (pólos) 'axis') [1][2][3 ...

  7. Ammonia (data page) - Wikipedia

    en.wikipedia.org/wiki/Ammonia_(data_page)

    The (s) notation indicates equilibrium temperature of vapor over solid. Otherwise temperature is equilibrium of vapor over liquid. log10 of anydrous ammonia vapor pressure. Uses formula shown below. Vapor-pressure formula for ammonia: [4] log 10P = A – B / (T − C), where P is pressure in k Pa, and T is temperature in kelvins;

  8. Ammonia borane - Wikipedia

    en.wikipedia.org/wiki/Ammonia_borane

    Infobox references. Ammonia borane (also systematically named ammoniotrihydroborate[citation needed]), also called borazane, is the chemical compound with the formula H3NBH3. The colourless or white solid is the simplest molecular boron - nitrogen - hydride compound.

  9. Intermolecular force - Wikipedia

    en.wikipedia.org/wiki/Intermolecular_force

    Intermolecular force. An intermolecular force (IMF; also secondary force) is the force that mediates interaction between molecules, including the electromagnetic forces of attraction or repulsion which act between atoms and other types of neighbouring particles, e.g. atoms or ions. Intermolecular forces are weak relative to intramolecular ...