Questions: The covalent bond between chlorine and iodine is a polar one. Which of the following properly represents the direction of polarity in this bond? -Cl-1+ +Cl^-- δ-Cl^δ+ δ+ δ+ Cl-1 δ-

The covalent bond between chlorine and iodine is a polar one. Which of the following properly represents the direction of polarity in this bond?
-Cl-1+
+Cl^--
δ-Cl^δ+ δ+
δ+ Cl-1 δ-

Transcript text: The covalent bond between chlorine and iodine is a polar one. Which of the following properly represents the direction of polarity in this bond? $-\mathrm{Cl}_{-1}+$ $+\mathrm{Cl}^{-}{ }^{-}$ $\delta-\mathrm{Cl}^{\delta+}{ }^{\delta+}$ ${ }^{\delta+} \mathrm{Cl}_{-1}{ }^{\delta-}$

Solution

Solution Steps

Step 1: Understanding Polarity in Covalent Bonds

In a covalent bond, polarity arises when there is a difference in electronegativity between the two atoms involved. The atom with the higher electronegativity will attract the shared electrons more strongly, resulting in a partial negative charge ($\delta^-$), while the other atom will have a partial positive charge ($\delta^+$).

Step 2: Electronegativity of Chlorine and Iodine

Chlorine ($\text{Cl}$) is more electronegative than iodine ($\text{I}$). This means that in a covalent bond between chlorine and iodine, chlorine will attract the shared electrons more strongly, resulting in chlorine having a partial negative charge ($\delta^-$) and iodine having a partial positive charge ($\delta^+$).

Step 3: Analyzing the Options

We need to identify the option that correctly represents the direction of polarity, with chlorine being $\delta^-$ and iodine being $\delta^+$.

Option 1: $-\mathrm{Cl}_{-1}+$ does not use the correct notation for partial charges.
Option 2: $+\mathrm{Cl}^{-}{ }^{-}$ incorrectly assigns a negative charge to chlorine.
Option 3: $\delta-\mathrm{Cl}^{\delta+}{ }^{\delta+}$ incorrectly assigns a positive charge to chlorine.
Option 4: ${ }^{\delta+} \mathrm{Cl}_{-1}{ }^{\delta-}$ incorrectly assigns a negative charge to chlorine.

Final Answer

None of the given options correctly represent the direction of polarity in the chlorine-iodine bond. The correct representation should show chlorine as $\delta^-$ and iodine as $\delta^+$. However, based on the options provided, none are correct.

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