Question

When sodium and chlorine atom react with each other then:

• A. Energy is absorbed and covalent bond is formed
• B. Energy is released and ionic bond is formed
• C. Energy is released and a covalent bond is formed
• D. Energy is absorbed and ionic bond is formed

Answer 1

The correct option is B Energy is released and ionic bond is formed

When a sodium atom transfers an electron to a chlorine atom, forming a sodium cation ${\text{Na}}^{+}$ and a chloride anion ${\text{Cl}}^{-}$, both ions have complete valence shells, and are energetically more stable. The reaction is extremely exothermic, producing a bright yellow light and a great amount of heat energy.