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ICSE Class 10 Answered

Why do group 1 metals form weaker alkalis?

Asked by Gerald Lobo | 09 Mar, 2014, 11:10: AM
answered-by-expert Expert Answer
Dear Gerald

Thanks for asking us a question in Ask the Expert section of TopperLearning.com.

We have not understood the query that you have posted. 
 
Group 1 metals doesnot form ONLY weaker alkalis.
 

Alkali metals are the elements of Group-1 and their valence electronic configuration is ns1

Let us consider the example of sodium. In sodium, electronic configuration is ; 1s2 2s2 2p6 3s1 , by losing a 3s electron the Na+ ion will attain a configuration like Neon gas(Noble gas)  1s2 2s2 2p6 .

It will require a huge energy to remove next electron from this fully filled and stable configuration.

Thus, alkali metals do not form M+2 cations.



Regards

Topperlearning Team.
Answered by | 09 Mar, 2014, 01:06: PM

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