What is the formula for the binary ionic compound formed between
zinc and nitrogen.

Zinc nitride (Zn3N2) is an inorganic compound of zinc and nitrogen, usually obtained as (blue)grey crystals. It is a semiconductor. In pure form, it has the anti-bixbyite structure.

Chemical formula: Zn3N2

Space group: Ia-3, No. 206

EC Number: 215-207-3

Appearance: blue-gray cubic crystals

Explanation:

Explanation:

Assume the given reaction is in a state of equilibrium and balanced on a see-saw as follows:

                                                S+O₂ ⇄ SO₂  

                                                          Δ

If S & O₂ (answer choice 4) are added, the reactant side of the equilibrium would become unbalanced and the reaction see-saw tilt left, or to the reactant side. In this condition, the reaction would no longer be in equilibrium forcing the reaction chemistry to shift right toward the product side in order to establish a new equilibrium.