21. Which block of elements are mostly metals with high B.P., M.P. values ?

1. 1. s-block

   
   
   

   2. d-block

   
   
   

   3. p-block

   
   
   

   4. can not be said

   
   
   

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   NA

   Correct Option: B

   NA

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22. Which of the following pairs do not have diagonal relationship ?

1. 1. Be, Al

   
   
   

   2. Li, Mg

   
   
   

   3. B, Si

   
   
   

   4. Na, Mg

   
   
   

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   NA

   Correct Option: D

   NA

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23. which has the highest electron affinity ?

1. 1. F

   
   
   

   2. CI

   
   
   

   3. Br

   
   
   

   4. I

   
   
   

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   NA

   Correct Option: B

   NA

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24. Which of the following has zero electron affinity ?

1. 1. Nitrogen

   
   
   

   2. Oxygen

   
   
   

   3. Fluorine

   
   
   

   4. Neon

   
   
   

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   NA

   Correct Option: D

   NA

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25. Intert gases (Except Helium) comes in which block in the periodic table ?

1. 1. s-block

   
   
   

   2. d-block

   
   
   

   3. p-block

   
   
   

   4. None of these

   
   
   

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   NA

   Correct Option: C

   NA

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