Question

An ionic bond is present in which of the following species:

• A. Sodium Bromide
• B. Sulfur Trioxide
• C. Hydrogen Chloride
• D. Carbon Monoxide

Answer 1

The correct option is A

Sodium Bromide

Explanation for Correct Option:

Option (A): Sodium Bromide

• An ionic bond is defined as the attractive electrostatic force that is present between two oppositely charged ions.
• The formation of an ionic bond occurs when excess electrons from an anion are transferred to a cation in order to attain their nearest inert gas configuration.
• In Sodium bromide $\left(\mathrm{NaBr}\right)$ the cation is ${\mathrm{Na}}^{+}$ and the anion is ${\mathrm{Br}}^{-}$.
• Hence, they have oppositely charged ions that form an ionic bond through electrostatic force of attraction.

Explanation for Incorrect Option:

Option (C) Hydrogen Chloride

• In, Hydrogen chloride$\left(\mathrm{HCl}\right)$, the Hydrogen atom shares its 1 electron with Chlorine, and thus forms a covalent bond.
• Hence, they do not form ionic bonds.

Option (B): Sulfur Trioxide

• In Sulfur trioxide $\left({\mathrm{SO}}_3\right)$ both Sulphur and Oxygen form a covalent bond.
• Hence, they do not form ionic bonds.

Option (D): Carbon Monoxide

• In Carbon monoxide $\left(\mathrm{CO}\right)$ both Carbon and Oxygen form a covalent bond,
• Hence, they do not form ionic bonds.

Therefore, an ionic bond is present in which of the following species option (A): Sodium Bromide$\left(\mathrm{NaBr}\right)$