Question

34. The following table shows the position of five elements A.B.C.D and E in the modern
Periodic table.
5
Group --
2
3 to 12 13 14
15 16. 17 18
Period
B
С
2.
А
D
E
3
Answer the following giving reasons
a. Which element is a metal with valency 2?
b. Which element is least with valency 2?
C. Out of D and E which element has a smaller atomic radius?​

Answer 1

Answer:

(i) D, As it is on the left side of the table in group 2 (ii) C, as it is in the group 18/ Noble gas (iii) E, as we move from left to right across a period, atomic radius decreases.