Is SiS2 polar or nonpolar? – (Polarity of SiS2)
The question is –
Is SiS2 polar or nonpolar?
Answer:
⇒ SiS2 is non-polar.
Explanation:
Silicon disulfide (SiS2) is non-polar as the dipole moments of individually polar Si=S bonds get canceled equally in opposite directions in the linear molecular shape and geometry.
SiS2 consists of two Si=S double covalent bonds.
Each Si=S bond is slightly polar as an electronegativity difference of 0.39 units exists between a silicon (E.N = 2.19) and a sulfur (E.N = 2.58) atom.
Oppositely charged dipoles develop in the molecule as the central Si-atom gains a partial positive charge (δ+) while each of the terminal S-atoms gains partial negative charges (δ–).
There is no lone pair of electrons on the central Si-atom in SiS2.
Thus, no distortion is witnessed in its shape and/or geometry.
Hence the SiS2 molecule occupies a linear molecular shape.
The oppositely-directed Si=S dipole moments get canceled equally in the symmetrical linear shape to yield an overall non-polar SiS2 molecule (net µ = 0).
Also, check –
⇒ How to identify polar or nonpolar compounds?
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Vishal Goyal is the founder of Topblogtenz, a comprehensive resource for students seeking guidance and support in their chemistry studies. He holds a degree in B.Tech (Chemical Engineering) and has four years of experience as a chemistry tutor. The team at Topblogtenz includes experts like experienced researchers, professors, and educators, with the goal of making complex subjects like chemistry accessible and understandable for all. A passion for sharing knowledge and a love for chemistry and science drives the team behind the website. Let's connect through LinkedIn: https://www.linkedin.com/in/vishal-goyal-2926a122b/