Question

(i) Name the most reactive element.
(ii) How many shells does D have?
(iii) Name the element having 2 valency
(iv) How many valence electrons does J have.
(v) Which is more reactive H or I.
(vi) The atom of which element is bigger in size E or H. ​

Answer 1

Answer:

1)sodium is the most reactive element

2)2

3)helium

4)8

5)h

6)I