Periodic Table and Periodicity of Properties

Which of the following elements has the greatest shielding effect?

 
 
 
 

Valence shell electronic configuration of an element M (atomic no. 14) is:

 
 
 
 

Period number of Al is:

 
 
 
 

Main group elements are arranged in

 
 
 
 

All the elements of Group IIA are less reactive than alkali metals because they have:

 
 
 
 

Which of the following groups contain alkaline earth metals?

 
 
 
 

Number of periods in the periodic table are:

 
 
 
 

As you move from right to left across a period, which of the following does not increase?

 
 
 
 

Which of the following elements belongs to VIIIA?

 
 
 
 

Question 1 of 9

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