Question

When electrons are transferred from one atom to another, and the two atoms unite as a result of the opposite charges, a(n) ________ is formed.

Answer 1

Answer: ionic compound

Step-by-step explanation:

An ionic compound is formed when one element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element and forms a positively charged ion called as cation. The element which accepts the electrons is known as electronegative element and forms a negatively charged ion called as anion.

For formation of sodium chloride:

Electronic configuration of sodium:

`[Na]=1s^22s^22p^63s^1`

Sodium atom will loose one electron to gain noble gas configuration and form sodium cation with +1 charge.

`[Na^+]=1s^22s^22p^63s^0`

Electronic configuration of chlorine:

`[Cl]=1s^22s^22p^63s^23p^5`

Chlorine atom will gain one electron to gain noble gas configuration and form chloride ion with -1 charge.

`[Cl^-]=1s^22s^22p^63s^23p^6`

The cations and anions being oppositely charged attract each other through strong coloumbic forces and form an ionic compound.