Number of valence electrons in Cl^- ion are : | vedclass

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(A) The atomic number of Chlorine $(Cl)$ is $17$.Electronic configuration of $Cl$ atom: $1s^2 2s^2 2p^6 3s^2 3p^5$.The number of valence electrons in

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$8$

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(A) The atomic number of Chlorine $(Cl)$ is $17$.Electronic configuration of $Cl$ atom: $1s^2 2s^2 2p^6 3s^2 3p^5$.The number of valence electrons in a neutral $Cl$ atom is $7$ (electrons in the $3rd$ shell).The $Cl^-$ ion is formed by gaining one electron into its valence shell.Therefore,the number of valence electrons in $Cl^-$ ion = $7 + 1 = 8$.

Number of valence electrons in $Cl^-$ ion are :

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