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CBSE - XI Science - Chemistry - The s-Block Elements

Why are alkali metals soft?What is the actual reason for it being soft?

Asked by Navya Benny 21st March 2015, 1:25 PM
Answered by Expert


There is only single electron in the valence shell of alkali metals due to which the metallic bonding is weak in nature. Hence, alkali metals are soft. 
There softness increases with increasing atomic numer (increasing period number) as metallic bonding becomes still more weaker.
Answered by Expert 21st March 2015, 6:23 PM

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