The diagram shows ammonium chloride being heated in a test tube.
(a) The formula of ammonium chloride is NH4Cl.
How many different elements are there in ammonium chloride?

The diagram shows ammonium chloride being heated in a test tube. (a) The formula
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3|three

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3 (Nitrogen, Hydrogen, and Chlorine)
14 / 18 (78%)
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