Here's why:
* Sulfur (S) has 6 valence electrons (electrons in its outermost shell).
* Hydrogen (H) has 1 valence electron.
To achieve a stable octet (8 electrons) in its outer shell, sulfur needs to gain 2 electrons. Each hydrogen atom needs to gain 1 electron. This is achieved by forming two single covalent bonds between the sulfur atom and two hydrogen atoms.
Therefore, the molecule formed is H₂S, with the following structure:
H
|
S
|
H
