The grid below represents part of the periodic table. Study it and answer the questions that follow. (The letters do not represent the actual symbols...

The grid below represents part of the periodic table. Study it and answer the questions that follow. (The letters do not represent the actual symbols of the elements).

i) Select an element which forms a divalent cation.
ii) What type of structure will the chloride of A have?
iii) How do the reactivities of B and E compare? Explain.
iv) Compare the atomic radius of C with that of D. Give a reason for your answer.
v) C and E burn in oxygen to form oxides. Compare the pH values of the solutions of the oxides of C and E.

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i) D
ii) Giant ionic structure
iii) B is more reactive than E. It has a smaller atomic radius with greater nuclear attraction hence gains electrons more readily.
iv) C has a larger atomic radius than D. It has more protons with the same shielding effect as D hence stronger nuclear attraction.
v) Oxide of C has a higher pH value than a solution of oxide of E. C is a metal, forms a basic oxide. The oxide of E is acidic.

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sharon kalunda answered the question on March 28, 2019 at 07:44

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