Which one of the following is the correct molecular formula of ammonium carbonate if the valency of ammonium ion is (+1) and carbonate anion is (-2) ?

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Q: 10 (NDA-I/2022)

Which one of the following is the correct molecular formula of ammonium carbonate if the valency of ammonium ion is (+1) and carbonate anion is (-2) ?
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question_subject: 

Science

question_exam: 

NDA-I

stats: 

0,32,39,32,21,11,7

keywords: 

{'ammonium carbonate': [0, 0, 0, 1], 'ammonium ion': [0, 0, 0, 1], 'molecular formula': [0, 0, 0, 1], 'carbonate anion': [0, 0, 0, 1], 'nh4c03': [0, 0, 0, 1], 'valency': [0, 0, 0, 1]}