Atoms of seven elements A, B, C, D, E, F and G have a different number of electronic shells but have the same number of electrons in their outermost shells. The elements A and C combine with chlorine to form an acid and common salt respectively. The oxide of element A is liquid at room temperature and is a neutral substance, while the oxides of the remaining six elements are basic in nature. Based on the above information answer the following questions:
(i) What could the element A be? (ii) Will elements A to G belong to the same period or same group of the periodic table? (iii) Write the formula of the compound formed by the reaction of the element A with oxygen. (iv) Show the formation of the compound by a combination of element C with chlorine with the help of electronic structure. (v) What would be the ratio of number of combining atoms in a compound formed by the combination of element A with carbon? (vi) Which one of the given elements is likely to have the smallest atomic radius?

Explanation