Question

1 - group of atoms present in ammonium.

2-group of atoms present in bisulphate and carbonate

Answer 1

in real all these are the ions

Answer 2

Answer:

ammonium- 1atom of nitrogen and 4 atoms of hydrogen

bisulphate- 1atom of hydrogen and sulphur and 4 atoms of oxygen

carbonate- 1atom of carbon and 3 atoms of oxygen