1.

The size of Cl^(-)=1.81ÅandCl=0.99Å. Explain

Answer»

Solution :1 `Cl-1s^(2)2s^(2)2p^(6)3s^(2)3p^(5),Cl^(-)-1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)`
2. Generally anions are LARGER than their parent atom
3. `Cl^(-)` had 18 electrons and Cl has 17 electrons. The later EXPERIENCES an greater effective inward pull by the nucleus.
4. This DECREASES the size of Cl atom when compared to `Cl^(-)` ion.


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