1.

Explain the Group 2 elements alkaline earth metals.

Answer»

Group 2 elements: Alkaline earth metals :

Atomic radii : The atomic radii of alkaline earth metals are fairly large though smaller than the corresponding alkali metals and they increase down the group. This is because on moving down the group, atomic radii increase primarily due to the addition of an extra shell of electrons in each succeeding element. 

Ionic radii: the atoms of these elements form divalent ions which show the same trend of increase in their size down the group.  

Ionization enthalpy: The alkaline earth metals have fairly low Ionizations enthalpies though greater than those of the corresponding elements of group 1 and this value decreases down the group. 



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