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英文字典中文字典相关资料:


  • Electron - Wikipedia
    In atoms, an electron's matter wave occupies atomic orbitals around a positively charged atomic nucleus The configuration and energy levels of an atom's electrons determine the atom's chemical properties Electrons are bound to the nucleus to different degrees
  • What Is an Electron? Definition and Facts
    Learn what an electron is Get its definition, learn where to find electrons, and understand the properties of this type of matter
  • Electron | Definition, Mass, Facts | Britannica
    In a neutral atom the number of electrons is identical to the number of positive charges on the nucleus Any atom, however, may have more or fewer electrons than positive charges and thus be negatively or positively charged as a whole; these charged atoms are known as ions
  • Science Made Simple: What Are Electrons? - SciTechDaily
    Electrons are elementary subatomic particles with negligible mass that surround the nucleus of an atom They are bound to the nucleus due to electromagnetic attraction, with neutral atoms having equal numbers of protons and electrons
  • DOE Explains. . . Electrons | Department of Energy
    The electron is a subatomic particle that is found in all atoms Unlike protons, neutrons, or the nuclei of atoms, electrons are elementary particles This means they are not made of even smaller particles Also unlike protons and neutrons, electrons have essentially no mass
  • What are Electrons? - BYJUS
    Electrons are subatomic particles that hold an elementary charge of magnitude -1 The charge of an electron is equal in magnitude to the charge held by a proton (but has an opposite sign) Therefore, electrically neutral atoms molecules must have an equal number of electrons and protons
  • Electron Definition in Science - ThoughtCo
    Electrons are negatively charged particles found outside the nucleus of an atom Electrons are much lighter than protons and are key in conducting electricity in solids Electrons can combine with protons and neutrons to form atoms and are crucial in chemical bonds





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