Periodic Table and Periodicity of Properties

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

 
 
 
 

Main group elements are arranged in

 
 
 
 

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

 
 
 
 

Period number of Al is:

 
 
 
 

Number of periods in the periodic table are:

 
 
 
 

Which of the following groups contain alkaline earth metals?

 
 
 
 

Which of the following elements has the greatest shielding effect?

 
 
 
 

Which of the following elements belongs to VIIIA?

 
 
 
 

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

 
 
 
 

Question 1 of 9

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