2. Questions Bank
  3. JEE Main & Advanced
  4. Chemistry
  5. Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति

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 first \[({{\Delta }_{i}}{{H}_{1}})\] and second \[({{\Delta }_{i}}{{H}_{2}})\] ionization enthalpies (in \[kJ\text{ }mo{{l}^{-1}}\]) and the electron gain enthalpy \[({{\Delta }_{eg}}H)\] (in \[kg\,\,mo{{l}^{-1}}\]) of the elements I, II, III, IV and V are given below.
    Element \[{{\Delta }_{i}}{{H}_{1}}\] \[{{\Delta }_{i}}{{H}_{2}}\] \[{{\Delta }_{eg}}H\]
    I 520 7300 \[-\,60\]
    II 419 3051 \[-\,48\]
    III 1681 3374 \[-\,328\]
    IV 1008 1846 \[-\,295\]
    V 2372 5251 +48
    The most reactive metal and the least reactive non-metal of these are respectively

    A) I and V             

    B) V and II

    C) II and V    

    D) IV and V

    Correct Answer: C

    Solution :

    [c] I represents Li, II represents K III represents Br, IV represents I V represents He So, amongst these, II represents most reactive metal and V represents least reactive non-metal.            


You need to login to perform this action.
You will be redirected in 3 sec spinner