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The diameter of a neutral helium atom is about 146 pm. Suppose you could line up helium atoms...

Question:

The diameter of a neutral helium atom is about 146 pm. Suppose you could line up helium atoms side by side in contact with one another. Approximately how many atoms would it take to make the distance 1 cm from end to end? Round to the nearest whole number.

Distance Between Atoms:

Atoms do not touch each other, even though they come very close to each other. That's because the repulsion between them keeps a distance between them. However, the attraction between atoms keeps them bonded up with each other. The distance at which repulsion is minimum and attraction is maximum is the distance that achieves stability.

Answer and Explanation: 1

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We know the desired length (l) and the diameter (d) of a helium atom, so we use this information to calculate the number of atoms needed to make that...

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Atom | Definition, Structure & Examples

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Chapter 2 / Lesson 1
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Explore atoms. Learn the definition of an atom and understand its structure with diagrams and explanations. See atom examples and find the elements they form.


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