Defined as a phenomenon of liberation of electron from the surface that is stimulated by temperature elevation, radiation, or by strong electric field.
Answer:
The early atmosphere
Its early atmosphere was probably formed from the gases given out by volcanoes. It is believed that there was intense volcanic activity for the first billion years of the Earth's existence. The early atmosphere was probably mostly carbon dioxide, with little or no oxygen.
Explanation:
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KBr + Fs won't make a reaction because KBr is stable with an octet.
Bi+O2 probably won't occur because the O2 has a stable octet as well/
