When an electron drops from a higher energy level to a low energy level, then

Options :
  1. energy is emitted
  2. energy is absorbed
  3. atomic number increases
  4. atomic number decreases
Answer and Explanation :-

Answer: Option 1

Explanation:

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I pondered all these things, and how men fight and lose the battle, and the thing that they fought for comes about in spite of their defeat, and when it comes turns out not to be what they meant, and other men have to fight for what they meant under another name.
-William Morris