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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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Figure 18.45 Schematic representation of the outer electron cloud of a neutral water molecule.

From Textbooks • Aug. 12, 2015

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

From Textbooks • Jan. 1, 2015

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

From Salon • Apr. 27, 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

Most of the physical size of an atom is made up of an electron cloud, which hovers around the nucleus.

From "Meltdown" by Deirdre Langeland

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