Question

1. Will the valencies of the element be same or different and why??
2. Which element will have highest atomic number and why?
3. Arrange the element in increasing order of their mettalic character

Answer 1

1. No the valencies of the elements differ bcoz the elements do not have the same chemical properties according their slot in periodic table
2.The element 118th has highest atomic number ....the name is not yet discovered
3.for example in the increasing order of metallic character the 4 period elements will be as k ca sc ti v cr mn fe co ni cu etc...

Answer 2

Answer:

(a) Given the each element has an e −   in the outermost shell. ∵ They have same number of e  −   in the outermost shell. ∴ , they belong to the same group.

(b) Element with highest atomic radii will have highest atomic no. i.e. Z.

(c) As we have inferred above the atomic radii is in the order Z>Y>X. So, metallic character order is also the same, i.e. Z>Y>X.