Question

Which type of bond is present in ${\mathrm{H}}_2\mathrm{S}$ molecule?

• A. Ionic Bond
• B. Covalent Bond
• C. Co-ordinate Bond
• D. All of these

Answer 1

The correct option is B

Covalent Bond

The explanation for the correct answer:

(B) Covalent Bond

Covalent Bond:

• The mutual sharing of one or more pairs of electrons between two atoms forms a covalent bond.

In ${\mathrm{H}}_2\mathrm{S}$ molecule:

• Electronic configuration of $\mathrm{Sulfur}\left(\mathrm{S}\right)=1{\mathrm{s}}^{2}2{\mathrm{S}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^4$.
• Sulfur has six electrons in its valence shell. Thus, it needs two more electrons to complete its octet.
• Therefore, sulfur fulfills its octet by sharing two electrons with the hydrogen atom.

The explanation for the incorrect answer:

Ionic bonds develop when valence electrons are transferred from one atom to another, and they are formed by electrostatic attraction between oppositely charged ions.

Examples: Sodium chloride (common salt), Sodium bromide $\left(\mathrm{NaBr}\right)$, Sodium iodide $\left(\mathrm{NaI}\right)$ etc.

A coordinate bond (also known as a dative covalent link) is a type of covalent connection (a shared pair of electrons) in which both electrons originate from the same atom.

Example: Ammonium ion is a molecule with a coordinate bond. Nitrogen donates one pair of electrons to the empty orbital of the hydrogen ions.

Hence, option B is the correct answer. A covalent bond is present in ${\mathrm{H}}_2\mathrm{S}$ molecule.