avineshkumar.2010... , asked a question
Subject: Science , asked on 25/11/10

Why sodium is soft ?


Shukla Paladhi , Meritnation Expert added an answer, on 26/11/10

Hi Avinesh,
Sodium is soft owing to weak metallic bonding due to its large size and univalent nature. The word univalent means its valency is one i.e. it has only one electron in ts valence shell.
Hope, the answer is clear to you.

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ddanishsid... , added an answer, on 30/11/11

 why heliun neon etc gases called nobel gasses?

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