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Ball-and-stick model

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What is BALL-AND-STICK MODEL? What does BALL-AND-STICK MODEL mean?

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"ball and stick model of compound elements"

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Ball and Stick Model (chemistry)

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ball & stick

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benzene ball and stick model | Ball and Stick Model (chemistry)| Framework Model | Molecular model

In chemistry, the ball-and-stick model is a molecular model of a chemical substance which is to display both the three-dimensional position of the atoms and the bonds between them. The atoms are typically represented by spheres, connected by rods which represent the bonds. Double and triple bonds are usually represented by two or three curved rods, respectively, or alternately by correctly positioned sticks for the sigma and pi bonds. In a good model, the angles between the rods should be the same as the angles between the bonds, and the distances between the centers of the spheres should be proportional to the distances between the corresponding atomic nuclei. The chemical element of each atom is often indicated by the sphere's color.
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