Question

31. The following table shows the position of five elements A, B, C, D and E in
the modern periodic table.
Group
1
13
14 15
2 3 to
12
16
17
18
Period
1
2
A
c С
D
B
F
3
E
Answer the following on the basis of table given above, giving reasons:
() Name the non-metal with a valency of 3?
(1) Out of B and C whose atomic size is bigger and why?
(ii) Write the common name to the family to which D and F belong?
69​

Answer 1

Answer:

first answer is nitrogen and second answer is c because when we go in the period left to right electronegativity increases and third answer is transition and inner transitio metal

Explanation:

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