Question

what is the correct formula that would result from the combination of the two ionic species?\\(\ce{nh^+_4} \\) and \\(\ce{so^{2-}_4\\)\\(\ce{so_4(nh_4)_2}\\) \\(\ce{(nh_4)_2so_4}\\)\\(\ce{nh_4(so_4)_2}\\) \\(\ce{nh_4so_4}\\)

Explanation:

Step1: Determine ion charges

The ammonium ion is $\ce{NH_4^+}$ (charge +1), and the sulfate ion is $\ce{SO_4^{2-}}$ (charge -2).

Step2: Balance charges

To balance the charges, we need 2 ammonium ions (each +1) to balance 1 sulfate ion (charge -2). So the formula should have 2 $\ce{NH_4^+}$ and 1 $\ce{SO_4^{2-}}$.

Step3: Write the formula

Using the criss - cross method (or charge - balancing), the formula is $\ce{(NH_4)_2SO_4}$.

Answer:

$\boldsymbol{(NH_4)_2SO_4}$ (corresponding to the option: (NH₄)₂SO₄)