electrons

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electrons

1.When dopant with valence electrons less than those in the host semiconductor is introduced, the resulting doped system is n-type2.The scanning electron microscopy（SEM）uses a focused beam of high-energy electrons to generate a variety of signals at the inside3.In the fuel cell，the（）is a substance specifically designed so ions can pass through it, but electrons cannot.4.Atomic level structure involves electrons within the individual atoms and interactions with their nuclei.5.Polymers transmit heat mainly through free electrons.6.The key word to describe the nature of covalent bond isof electrons7.The key word to describe the nature of ionic bond is of electrons