(a) (i) C
(ii) D or E
(iii) F
(iv) D or E
(v) A
(vi) D
(b) Atomic radius of Y is smaller than that of X. The effective nuclear charger in Y is greater
than in X hence outer electrons strongly pulled to the centre reducing the radius.
(b) (i)
(ii) Period – 3 Group – IV
(c) (i) On the grid (period 2 Group 7)
(ii) Halogen
(iii) – Used in hospitals with patients with breathing difficulties
- Used by mountain climbers and deep sea divers
(iv) Basic
maurice.mutuku answered the question on October 15, 2019 at 05:22
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