Question
  • Which of the following atoms has seven valence electrons? 

 

In          Cl         Ca           Te          Xe

 

 

  • Which of the following species is NOT isoelectronic to the others?

 

Br-        P3-            Se2-          Kr         Sr2+

 

 

  • In the following set indicate the most reactive element. 

 

P              Cl             Ar              S

 

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Aldehydes and Ketones

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