单词	electron cloud
释义	electron cloud noun : the system of electrons surrounding the nucleus of an atom Example Sentences Recent Examples on the Web However, the effective location of the negative electron cloud is closer to the pen than the proton. Rhett Allain, Wired, 28 Jan. 2022 An atomic clock employs an electric oscillator regulated by an atom’s natural oscillation movement between the positive charge on the nucleus and the surrounding electron cloud. Larry Printz, Ars Technica, 24 June 2020 Impurities can act like a shield in the path of electron clouds, forcing the electrons to scatter. Courtney Linder, Popular Mechanics, 2 Apr. 2020 When two atoms get close together, each one’s electron cloud pushes the other’s around, and sometimes the two atoms start to behave as a unit: a molecule. Sophia Chen, WIRED, 27 Apr. 2018 Word History First Known Use 1920, in the meaning defined above
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