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The grid below shows a part of the periodic table. The letters do not represent the actual symbols.

      

The grid below shows a part of the periodic table. The letters do not represent the actual symbols.
Use it to answer the questions that follow:-
Q2010152019818.png
(a) How do the atomic radius of element X and Y compare
(b) (i) Using crosses (X) to represent electrons, draw the atomic structure of element Q
(ii) State the period and the group to which element Q belong
(c) (i) The ionic configuration of element G is 2.8 G forms an ion of the type G-1.
Indicate on the grid, the position of element G.
(ii) To which chemical family does element G belong?
(iii) State one use of element U
(iv) What is the nature of the compound formed between K and U

  

Answers


Maurice
(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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