HCl gas is covalent and NaCl is an ionic comp | vedclass

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(D) The electronegativity difference between $H$ and $Cl$ is approximately $0.9$,which is significantly less than $2.1$. According to the Pauling scal

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Electronegativity difference between $H$ and $Cl$ is less than $2.1$.

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(D) The electronegativity difference between $H$ and $Cl$ is approximately $0.9$,which is significantly less than $2.1$. According to the Pauling scale,if the electronegativity difference between two atoms is less than $1.7$ (or $2.1$ in some conventions),the bond formed is predominantly covalent. In $NaCl$,the electronegativity difference between $Na$ $(0.9)$ and $Cl$ $(3.0)$ is $2.1$,resulting in an ionic bond.

$HCl$ gas is covalent and $NaCl$ is an ionic compound. This is because

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Electrovalent bond formation depends on

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