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

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(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

Vedclass · Accepted Answer

$8$

Vedclass · Answer

(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 :

Similar Questions

On the basis of Rutherford's model of an atom,which subatomic particle is present in the nucleus of an atom?

Draw a sketch of Bohr's model of an atom with three shells.

Compare all the proposed models of an atom given in this chapter.

Explain with examples $(i)$ Isotopes and $(ii)$ Isobars. Give any two uses of isotopes.

Write the electronic configuration of any one pair of isotopes and isobars.

Vedclass Test Series

Exam Paper Generator

Online Exam Module