Answer to Question #61890 in Inorganic Chemistry for bharat

Question #61890
Why Softness of alkali metals increases from Li to Cs ?
1
Expert's answer
2016-09-13T06:38:03-0400
I have to admit, that physical properties of elements depend on the chemical. Therefore, softness is a result of one (ns1) valence electron configuration in the outermost s-orbital. Increasing atomic and ionic radii in the group from Li to Cs and close packing of atoms results metallic crystal is weak. That's why a softness tends to increase in Group I of Periodic System.

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