Balance copper(ii)sulfate+ammonium sulfide= copper(ii) sulfide + ammonium sulfate

The balanced chemical equation is written below.

Explanation:

Every balanced chemical equation follows law of conservation of mass.

A balanced chemical equation is defined as the equation in which total number of individual atoms on the reactant side is equal to the total number of individual atoms on the product side.

The balanced chemical equation for the reaction of copper (II) sulfate and ammonium sulfide follows:

By Stoichiometry of the reaction:

1 mole of copper (II) sulfate reacts with 1 mole of ammonium sulfide to produce 1 mole of copper (II) sulfide and 1 mole of ammonium sulfate

Hence, the balanced chemical equation is written above.

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.