Question

In an atom of an element Z, 5 electrons are present in the outermost shell.It requires noble has configuration then what would be the charge on the in so formed?write the formula of the compound which will be formed when Z reacts with sodium atom

Answer 1

it will ahve the charge of Z3-.the compound so formed will be-

            Z            Na
            3            1
so the compound is ZNa3

Answer 2

The charge on the ion so formed is Z⁻³. The formula of the compound which will be formed when Z reacts with sodium atom is Na₃Z.

• In an atom of an element Z, 5 electrons are present in the outermost shell.
• Element Z requires 3 more electrons to acquire stability and noble gas electronic configuration so charge on the ion so formed i.e. is Z⁻³.

• When this ion reacts with the sodium ion it forms the compound Na₃Z.

Hence, the charge on the ion so formed is Z⁻³. The formula of the compound which will be formed when Z reacts with sodium atom is Na₃Z.