Solved papers for JEE Main & Advanced AIEEE Solved Paper-2004

done AIEEE Solved Paper-2004 Total Questions - 2

• question_answer1) Which one of the following ions has the highest value of ionic radius?
  A)
  \[L{{i}^{+}}\]                     
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  B)
         \[{{B}^{3+}}\]                   
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  C)
  \[{{O}^{2-}}\]                    
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  D)
         \[{{F}^{-}}\]
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• question_answer2) The formation of the oxide ion\[{{O}^{2-}}(g)\]requires first an exothermic and then an exothermic step as shown below \[O(g)+{{e}^{-}}={{O}^{-}}(g);\]                 \[\Delta {{H}^{o}}=-142\,kJ\,mo{{l}^{-1}}\] \[{{O}^{-}}{{(g)}^{-}}+{{e}^{-}}={{O}^{2}}(g);\]   \[\Delta {{H}^{o}}=844\,kJ\,mo{{l}^{-1}}\] This is because
  A)
  oxygen is more electronegative
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  B)
  oxygen has high electron affinity
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  C)
  \[{{O}^{-}}\]ion will tend to resist the addition of another electron  
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  D)
  \[{{O}^{-}}\]ion has comparatively larger size than oxygen atom
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