Question

Q32. The following table shows the position of five elements A.B.C. D. E and F in the
modern penodic table
Group
1 2 13 to 12
15
17 18
Period
1
2
A
B. C
1
3
E
F
Answer the following giving reasons:
(1) Which element is a metal with valency one?
(u) Which element is a non-metal with valency one?
(mi) Which element is least reactive?
(iv) Out of A, B and C which element has a smaller atomic radius?
(v) Out of A and D which element is more metallic?
(vi) Out of D and E which element is more electronegative?
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Answer 1

Answer:

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Answer 2

Answer:

Explanation:

(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