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  2. Polyvalency (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Polyvalency_(chemistry)

    Fig. 1. Electron sharing in multivalent atomic binding. The dots and crosses represent the outer electrons of the two different species in each molecule. In ammonia (a), N is connected to three H atoms and is trivalent. In carbon tetrachloride (b), C is connected to four Cl atoms and is tetravalent.

  3. Molecular binding - Wikipedia

    en.wikipedia.org/wiki/Molecular_binding

    Molecular binding is an attractive interaction between two molecules that results in a stable association in which the molecules are in close proximity to each other. It is formed when atoms or molecules bind together by sharing of electrons.

  4. Lewis acids and bases - Wikipedia

    en.wikipedia.org/wiki/Lewis_acids_and_bases

    In a Lewis adduct, the Lewis acid and base share an electron pair furnished by the Lewis base, forming a dative bond. [1] In the context of a specific chemical reaction between NH 3 and Me 3 B, a lone pair from NH 3 will form a dative bond with the empty orbital of Me 3 B to form an adduct NH 3 •BMe 3.

  5. Lewis structure - Wikipedia

    en.wikipedia.org/wiki/Lewis_structure

    Count valence electrons. Nitrogen has 5 valence electrons; each oxygen has 6, for a total of (6 × 2) + 5 = 17. The ion has a charge of −1, which indicates an extra electron, so the total number of electrons is 18. Connect the atoms by single bonds. Each oxygen must be bonded to the nitrogen, which uses four electrons—two in each bond.

  6. Bonding in solids - Wikipedia

    en.wikipedia.org/wiki/Bonding_in_solids

    In particular, the binding energies of these interactions vary widely. Bonding in solids can be of mixed or intermediate kinds, however, hence not all solids have the typical properties of a particular class, and some can be described as intermediate forms .

  7. The 5 best US cities to celebrate New Year's Eve, ranked - AOL

    www.aol.com/5-best-us-cities-celebrate-100402607...

    The personal finance website WalletHub has ranked the best places to celebrate New Year's Eve this year. The site compared 100 of the biggest US cities on entertainment, food, costs, safety, and ...

  8. Play Hearts Online for Free - AOL.com

    www.aol.com/games/play/masque-publishing/hearts

    Enjoy a classic game of Hearts and watch out for the Queen of Spades!

  9. Bonding molecular orbital - Wikipedia

    en.wikipedia.org/wiki/Bonding_molecular_orbital

    The MO diagram for dihydrogen. In the classic example of the H 2 MO, the two separate H atoms have identical atomic orbitals. When creating the molecule dihydrogen, the individual valence orbitals, 1s, either: merge in phase to get bonding orbitals, where the electron density is in between the nuclei of the atoms; or, merge out of phase to get antibonding orbitals, where the electron density ...