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OPTION B ,COMPOUND CONTAINING AMMONIUM
Well the the answer is 70.8c but if you round it up it is 71c which I choice and got it correct so the answer is 71c
Group 18 is the only group in periodic table in which all the elements are nonmetals. This group contains F, Cl, Br, I and At and also the other name of this group is halogen which means salt producer.
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Answer: any answer choices
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i am quite unsure what you want me to answer but if you explain it to me w ould live to help
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