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Answer:

  • There are two more examples of the man made elements that are  neptunium and astatine.
  • They are also known as artificial elements because they are the member of modern periodic table prepared at the laboratory artificially by a particular scientist.
  • These are the elements that are formed using small amount of particles.
  • They are made by combining the particles by colliding them at higher speed.
LunaWinterHunter7

The three man made element dots are: Promethium Technetium Plutonium Explanation:- There are two more examples of the man made elements that are are neptunium and astatine. They are also known as artificial elements because they are the member of modern periodic table prepared at the laboratory artificially by by a particular scientist.

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