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19 November, 13:06

Which of the following is the correct chemical formula for Na and S?

Na2S

NaS2

NaS

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Answers (2)
  1. 19 November, 13:13
    0
    Na2S is your answer.
  2. 19 November, 13:18
    0
    Na2S because Na is 1 away from its noble gas giving it a positive 1 charge. S is two away from its noble gas so it is given a negative 2 charge. You need two Na so that they will cancel with the negative 2 charge.
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