Group A elements consist of mixture of metals, non-metals and metalloids. Group B elements exist as diatomic molecules.

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Group A elements consist of mixture of metals, non-metals andmetalloids. Group B elements exist as diatomic molecules. Elementfrom groups A and B have two shells occupied by electrons and havebeen placed in the same Period X. As a chemistry student, (a)Explain the physical properties and their oxidation states of GroupA elements. (b) Explain the thermal stability of Group B elements.(c) With the aid of chemical equation, explain the reaction ofgroup B elements with silver ions followed by aqueous ammonia. (d)Identify Period X and discuss the trends across the Period X. (e)Using the knowledge of Lewis Diagram, show the formation of bondfrom any ONE (1) of the element from Group A and any ONE (1) non-metal element. (f) State the electronic configuration of elementsfrom the bond formed in (e). (g) Draw the orbital diagram of theelements from the bond formed in (e). (h) Predict the molecularshape and bond angle of the elements from the bond formed in (e).[25 marks] FOUNDATION IN SCIENCE SEMESTER 2 CEM3114 CHEMISTRY 1INTAKE: MAY 21 (2/21) Page 3 (i) Illustrate the polarity anddetermine the bond type of elements from the bond form ine