why noble gases and alkali earth metals have positive electron affinity?
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Noble gases show zero electron affinity...
And alkali earth metals show positive electron affinity because if they donate electron then they will attain stable configuration of their nearest noble gas(which show zero electron affinity )
Hope this helps you....
And alkali earth metals show positive electron affinity because if they donate electron then they will attain stable configuration of their nearest noble gas(which show zero electron affinity )
Hope this helps you....
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