1.

Which one between Cl and Cl- would have more size? Why?

Answer»

1. The electronic configuration of chlorine (Cl) atom is 1s2 2s2 2p6 3s2 3p5 and the electronic configuration of chloride (Cl-) ion is 1s2 2s2 2p6 3s2 3p6

2. Both chlorine and chloride ions have 17 protons each but there are 17 electrons in chlorine atom, whereas 18 electrons in chloride ion. 

3. Therefore, the nuclear attraction is less in Cl- ion when compared with chlorine atom. 

4. Therefore the size of the chlorine (Cl) atom is less size than chloride of Cl- ion.



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