Periodic Classification and Periodic Properties Quiz-01

1. The first ionisation potential of Na is 5.1 eV. The value of electron gain enthalpy of  Na+ will be

 
 
 
 

2. Which of the following represents the correct order of increasing first ionisation enthalpy for Ca, Ba, S, Se and Ar?

 
 
 
 

3. The element with the highest first ionisation potential is

 
 
 
 

4. The first ionisation potential of Na,Mg,Al and Si are in the order

 
 
 
 

5. The statement that is not correct for the periodic classification of elements is

 
 
 
 

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