Is Dichlorine monoxide (Cl2O) polar or nonpolar? – Polarity of Cl2O
Home > Chemistry Questions > Cl2O polar or nonpolar?
The question is –
Is Cl2O polar or nonpolar?
Answer:
⇒ Cl2O is a polar molecule.
Explanation:
Dichlorine monoxide (Cl2O) is polar because the dipole moments of polar Cl-O bonds do not get canceled in the asymmetric bent shape of Cl2O.
Cl2O consists of two Cl-O bonds.
Each Cl-O bond is slightly polar as it possesses an electronegativity difference of 0.28 units between the single-covalently bonded chlorine (E.N = 3.16) and oxygen (E.N = 3.44) atoms.
The central O-atom gains a partial negative charge (δ–), while each of the two Cl-atoms gains partial positive charges (δ+) in the Cl2O molecule.
In Cl2O, the central O-atom possesses 2 lone pairs of electrons, which leads to strong lone pair-lone pair and lone pair-bond pair electronic repulsions.
This strong repulsive effect distorts the shape and geometry of the molecule, which leads to an overall bent, angular, or V-shape.
The Cl-O dipole moments do not get canceled in the asymmetric bent shape. Rather, the overall polarity effect is enhanced as the charged electron cloud stays non-uniformly distributed over the molecule.
Consequently, Cl2O is overall polar (net µ = 0.78 Debye).
Also, check –
⇒ How to identify polar or nonpolar compounds?
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