Q13 of 181 Page 302

How does the valency of elements change on moving from left to right in the third period of the periodic table ?

As we move left to right in the third period of the periodic table the valency of the element increases from 1 to 4 then decreases to zero.


More from this chapter

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11

What happens to the metallic character of the elements as we go down in a group of the periodic table ?

 12

How does the number of valence electrons vary on moving from left to right :

(i) in the first period of the periodic table ?


(ii) in the second period of the periodic table

 14

How does the valency of elements vary in going down a group of the periodic table ?

 15

Name the element which is in :

(a) first group and third period


(b) seventeenth group and second period.