What is the formula of the compound formed between the ammonium ion and the carbonate ion? hint: carbonate (co3) can be treated as a single unit with a 2 charge, whereas ammonium (nh) also can be treated as a single unit with a 1* charge. a) nh4co3 b) nh4co3)2 c) (nh4)2co3 d) (nh2)2co3 ob) d)

c) (NH₄)₂CO₃

Explanation:

The formula of a compound is formed by arranging the cation and anion ,

as follows -

First the cation is written , followed by the anion ,

Then the valency of the both the cation and the anion is crossed , and written as a subscript .

for example

cation A²⁺ and the anion B³⁻

Writing the cation first and anion second

A²⁺  B³⁻

now , crossing the valency , as,

A₃B₂

from the question ,

The cation is the ammonium ion , i.e. , NH₄⁺

and the anion , is carbonate ion , i.e. , CO₃²⁻

Now , the formula is written as -

(NH₄)₂CO₃

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