How easily can you tell the atomic number of the elements? Can you tell the atomic number of the first 20 elements on the periodic table? Try this quiz and test your knowledge regarding the nuclear charge number of a chemical element. This test might be a little tricky for you as we will not provide any options from which you can guess the answer. Here, you have to write your answers in the given blanks. Do you think you can recall the atomic number of the first 20 elements? Play the quiz now.
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