Please solve the following:

Dear student,

(i) As we go down the group the metallic character increases.
Hence, the increasing order of metallic character is as follows- 
Li < Na < K < Rb < Cs

(ii) On moving left to right in a periodic table the size decreases and on moving top to bottom in a periodic table the size increases.

All the elements given in the second question are from the third period.

So, the decreasing order of atomic size is- 
Na > Mg > Si > S > Cl

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Regards


 

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