JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank Self Evaluation Test - Classification of Elements and Periodicity in Properties

  • question_answer
    The increasing order of electron affinity of N, P and As is               

    A) N<P<As                      

    B) As <P<N

    C) As<N<P          

    D) As<N>P

    Correct Answer: C

    Solution :

         [c] Phosphorus has vacant 'd'-orbitals due to which it has higher electron affinity than nitrogen. As also has vacant d-orbitals but its atomic size is very big thus its electron affinity will be lesser than N.


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