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electron cloud

American  
[i-lek-trahn klaud] / ɪˈlɛk trɑn ˈklaʊd /

noun

  1. a mathematically defined region surrounding the nucleus of an atom where electrons are likely to be found.


Example Sentences

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In other words, a helium atom’s electron cloud is about 100,000 times bigger than its nucleus.

From Textbooks Jan. 1, 2015

Although this model is helpful in visualizing atomic structure, in reality, electrons do not travel in fixed orbits, but whiz around the nucleus erratically in a so-called electron cloud.

From Textbooks Jun. 19, 2013

If nuclear weapons were exploded in the atmosphere as a defense against incoming missiles, the range of this electron cloud would be vast indeed.

From Salon Apr. 27, 2013

One of the leading researchers on electron cloud disruption, Jerome Pressman, had been advising the U.S.

From Salon Apr. 27, 2013

Since each atom is electrically neutral, the number of protons in the nucleus must exactly equal the number of electrons in the electron cloud.

From "Cosmos" by Carl Sagan

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