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  2. Molecular model - Wikipedia

    en.wikipedia.org/wiki/Molecular_model

    The model shown to the left represents a ball-and-stick model of proline. The balls have colours: black represents carbon (C); red, oxygen (O); blue, nitrogen (N); and white, hydrogen (H). Each ball is drilled with as many holes as its conventional valence (C: 4; N: 3; O: 2; H: 1) directed towards the vertices of a tetrahedron. Single bonds are ...

  3. Ball-and-stick model - Wikipedia

    en.wikipedia.org/wiki/Ball-and-stick_model

    A plastic ball-and-stick model of proline. In chemistry, the ball-and-stick model is a molecular model of a chemical substance which displays both the three-dimensional position of the atoms and the bonds between them. [1] The atoms are typically represented by spheres, connected by rods which represent the bonds.

  4. Space-filling model - Wikipedia

    en.wikipedia.org/wiki/Space-filling_model

    A space-filling model of n-octane, the straight chain (normal) hydrocarbon composed of 8 carbons and 18 hydrogens, formulae: CH 3 CH 2 (CH 2) 4 CH 2 CH 3 or C 8 H 18.Note, the representative shown is of a single conformational "pose" of a population of molecules, which, because of low Gibbs energy barriers to rotation about its carbon-carbon bonds (giving the carbon "chain" great flexibility ...

  5. VSEPR theory - Wikipedia

    en.wikipedia.org/wiki/VSEPR_theory

    Another example is O(SiH 3) 2 with an Si–O–Si angle of 144.1°, which compares to the angles in Cl 2 O (110.9°), (CH 3) 2 O (111.7°), and N(CH 3) 3 (110.9°). [24] Gillespie and Robinson rationalize the Si–O–Si bond angle based on the observed ability of a ligand's lone pair to most greatly repel other electron pairs when the ligand ...

  6. Stereoisomerism - Wikipedia

    en.wikipedia.org/wiki/Stereoisomerism

    For example, there exists a variety of Cyclohexane conformations (which cyclohexane is an essential intermediate for the synthesis of nylon–6,6) including a chair conformation where four of the carbon atoms form the "seat" of the chair, one carbon atom is the "back" of the chair, and one carbon atom is the "foot rest"; and a boat conformation ...

  7. 2025 NFL mock draft: Expert projections with Titans ... - AOL

    www.aol.com/2025-nfl-mock-draft-expert-145839228...

    Among the teams with the most significant decisions to make are the Tennessee Titans, Cleveland Browns and New York Giants, the three franchises atop the 2025 draft order. All three could be in ...

  8. 'Large number' of Americans' metadata stolen by Chinese ...

    www.aol.com/news/large-number-americans-metadata...

    WASHINGTON (Reuters) -A large number of Americans' metadata has been stolen in the sweeping cyberespionage campaign carried out by a Chinese hacking group dubbed "Salt Typhoon," a senior U.S ...

  9. Heat's Jimmy Butler reportedly prefers trade out of Miami ...

    www.aol.com/sports/heats-jimmy-butler-reportedly...

    He's currently averaging 18.5 points, 5.8 rebounds and 4.9 assists this season. Jimmy Butler of the Miami Heat is reportedly ready for a trade to a contending team, though he has not formally ...

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