Question

Group 1 Group 16
A X
B Y
- Z
D M
Giving a reason for the following:
(a)Element M has the largest atomic size as compared to the other elements, X, Y, Z shown in Group
16 of the section of the periodic table shown above.
(b) Element A has a valency of 1.
(c) Elements A, B, and D are metals.

Answer 1

Answer:

element 1 has no valency