When tungsten atoms are heated,their outermost electrons are moved out of the atom in space. This principle is called:

Name: When tungsten atoms are heated,their outermost electrons are moved out of the atom in space. This principle is called:
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When tungsten atoms are heated, their outermost electrons are moved out of the atom in space, resulting in the emission of electrons from the surface of the heated tungsten filament. This phenomenon is called thermionic emission.

When Tungsten Atoms Are Heated,their Outermost Electrons Are Moved Out